Question

read the passage.

over the years, roller coaster engineers have taken ride designs to amazing new lengths, heights, and speeds. originally, roller coasters were constructed of wood with steel tracks for the cars to ride in. later, engineers figured out that replacing wooden structures with steel could make coasters stronger. as a result, it was possible to build taller and faster coasters with more exciting features. however, these new features brought safety concerns that were expensive and time - consuming to test. to solve this problem, engineers now use special software to build and test coaster designs on computers. the software helps them experiment with different designs. they can make careful calculations that increase a rides thrills while making sure riders are safe.

based on the passage, how has computer software affected the design of roller coasters?

computer software allows engineers to run trials on coaster designs more quickly and cheaply.

computer software makes it easier for engineers to learn about new coaster designs.

computer software allows engineers to more accurately project the total cost of coaster designs.

computer software makes it easier for engineers to find and purchase new materials.

submit

Explanation:

The passage states that new coaster features had safety concerns that were “expensive and time - consuming to test.” Then it says “engineers now use special software to build and test coaster designs on computers.” This implies that the software addresses the cost and time issues of testing, so it allows for quicker and cheaper trials. The other options are not supported by the text. There is no mention of learning about new designs (other than testing them), projecting total cost (only testing cost implications are related to time and money in the context of testing), or finding/purchasing materials.

Answer:

Computer software allows engineers to run trials on coaster designs more quickly and cheaply.