Question

the engineering feat of roman aqueducts

(1) the roman empire is renowned for its monumental architecture, but perhaps no innovation was more vital to its success than the aqueduct. (2) as roman cities, particularly rome itself, grew in population, local water sources became insufficient and polluted. (3) to solve this problem, roman engineers designed and constructed an extensive network of aqueducts, sophisticated channels built to transport massive quantities of fresh water from distant springs and rivers directly into urban centers. (4) these structures were not just utilitarian; they were symbols of roman power and ingenuity that transformed daily life.

(5) the core principle behind the roman aqueduct was gravity. (6) engineers meticulously surveyed the landscape to plot a course that allowed water to flow downhill along a precise and gentle gradient. (7) on average, the channels descended only about one foot for every 300 feet of length. (8) this slight, continuous slope ensured a steady, manageable flow that would not stagnate or move so quickly that it eroded the structure. (9) when the path crossed a valley or low-lying area, engineers built magnificent arched bridges to maintain the necessary height and gradient, saving materials while creating structures of enduring beauty.

(10) construction relied on advanced materials and techniques. (11) the romans perfected the use of a unique volcanic ash-based concrete known as opus caementicium, which was both incredibly strong and waterproof. (12) this material, combined with stone and brick, formed the aqueducts core structure. (13) to ensure the purity of the water, the interior of the channels was often lined with a special waterproof cement called opus signinum. (14) furthermore, most of the aqueducts length was not on high arches but was instead comprised of covered trenches that ran underground, a design choice that protected the water from contamination and kept it cool.

(15) maintaining this vast system required constant and organized labor. (16) a dedicated official, the curator aquarum, oversaw a large team responsible for regular cleaning, monitoring, and repairs. (17) they cleared away mineral deposits, fixed leaks, and ensured the system operated efficiently. (18) ultimately, the aqueducts supplied water for public baths, latrines, fountains, and wealthy private residences, dramatically improving public health and sanitation. (19) the principles of roman aqueduct construction were so advanced that they remained unequaled for over a thousand years and continue to influence modern civil engineering projects.

what is the best way to combine sentences 15 and 16?

a. maintaining this vast system required constant and organized labor under the oversight of a dedicated official, the curator aquarum, who managed a large team responsible for regular cleaning, monitoring, and repairs.
b. to maintain this vast system, it required constant labor, and a dedicated official known as the curator aquarum oversaw a large team for regular cleaning, monitoring, and repairs.
c. this vast system required constant and organized labor for maintenance, so a dedicated official, the curator aquarum, oversaw a large team that would clean, monitor, and repair it.
d. because this vast system required constant and organized labor, maintaining it meant a dedicated official, the curator aquarum, had to oversee a large team for cleaning, monitoring, and repairs.

Explanation:

Analyze the original sentences

The original sentences are:
(15) "Maintaining this vast system required constant and organized labor."
(16) "A dedicated official, the curator aquarum, oversaw a large team responsible for regular cleaning, monitoring, and repairs."

Sentence 15 establishes the need for labor, and Sentence 16 introduces the specific official and team that fulfilled this need.

Evaluate the options for clarity and conciseness

We need to find the option that combines these ideas most smoothly without adding wordiness, awkward phrasing, or grammatical errors.

• Option A: "Maintaining this vast system required constant and organized labor under the oversight of a dedicated official, the curator aquarum, who managed a large team responsible for regular cleaning, monitoring, and repairs."
• This option flows naturally. It uses a prepositional phrase ("under the oversight of...") to connect the labor to the official, and a relative clause ("who managed...") to describe the official's role, avoiding repetition.

• Option B: "To maintain this vast system, it required constant labor, and a dedicated official known as the curator aquarum oversaw a large team for regular cleaning, monitoring, and repairs."
• This option contains a grammatical issue: "it" has no clear referent in "To maintain this vast system, it required...". It is also less cohesive.

• Option C: "This vast system required constant and organized labor for maintenance, so a dedicated official, the curator aquarum, oversaw a large team that would clean, monitor, and repair it."
• This option is repetitive ("system required... labor for maintenance" repeats the idea of maintaining) and slightly wordier at the end.

• Option D: "Because this vast system required constant and organized labor, maintaining it meant a dedicated official, the curator aquarum, had to oversee a large team for cleaning, monitoring, and repairs."
• This option is highly repetitive ("Because this vast system required... maintaining it meant...") and structurally awkward.

Select the best option

Using Textual Evidence from the passage, Option A is the most grammatically correct, concise, and elegant way to combine the two sentences.

Answer:

• A. Maintaining this vast system required constant and organized labor under the oversight of a dedicated official, the curator aquarum, who managed a large team responsible for regular cleaning, monitoring, and repairs. (Correct answer)
• B. To maintain this vast system, it required constant labor, and a dedicated official known as the curator aquarum oversaw a large team for regular cleaning, monitoring, and repairs.
• C. This vast system required constant and organized labor for maintenance, so a dedicated official, the curator aquarum, oversaw a large team that would clean, monitor, and repair it.
• D. Because this vast system required constant and organized labor, maintaining it meant a dedicated official, the curator aquarum, had to oversee a large team for cleaning, monitoring, and repairs.