Question

read the selection and choose the best answer to each question. then fill in the answer on your answer document.

it takes science
greg wrote the following paper about the science involved in designing roller - coaster rides. read greg’s paper and look for any revisions he should make. when you finish reading, answer the questions that follow.

(1) imagine being on a roller - coaster track. (2) you feel the cars slowly climbing to the top of a large hill. (3) suddenly the roller coaster plunges steeply. (4) it bends and turns as it swiftly follows the curves of the track. (5) happy screams fill the air as the brief but good ride comes to an end. (6) riding on a roller coaster may last only a few minutes. (7) planning a new roller - coaster ride, however, takes several years. (8) science and a lot of other things are needed to design a fun and working roller coaster.

(9) ride design begins with a computer program. (10) the program calculates the forces that will affect the roller coaster cars as they move along the track. (11) designers must understand the limits these forces create. (12) understanding these limits helps designers when they are building and improving roller coasters. (13) designers use their knowledge of friction, gravity, and the laws of motion to make the ride act in a way they plan. (14) this is the reason there are often large hills on roller coasters. (15) designers take advantage of gravity to generate speed on their ride as cars

1. greg would like to provide additional support for the idea he has presented in sentence 38 (not fully shown). which sentence best follows and supports sentence 38?

• building elaborate roller coasters costs amusement parks a lot of money.
• most roller coasters have several hills and twists, although some hills are steeper than others.
• other types of rides are being built at amusement parks because of limited space for traditional roller coasters.
• designers are excited and hopeful about the possibilities of roller - coaster designs.

Explanation:

To solve this, we analyze the context of sentence 38 (not fully visible, but the paper is about the science of roller - coaster design). We need a sentence that supports the idea in sentence 38.

• Option 1: Talks about cost, which is not related to the science of design.
• Option 2: Describes the physical features (hills, twists) of roller coasters. Since the paper is about the science (like forces, gravity, motion) behind design, the structure (hills, twists) is related as these are part of the design that involves scientific principles (like how gravity and forces act on them).
• Option 3: Talks about other rides due to space, not related to supporting the science of roller - coaster design.
• Option 4: Talks about designers' excitement, not about the science or design details.

So the best option is the one about the hills and twists of roller coasters.

Answer:

The option "Most roller coasters have several hills and twists, although some hills are steeper than others." (the second option among the given choices)