PrepTest 117

Incorrect. To fully support an answer about a belief, there has to be specific information about that belief. While the stimulus does discuss what scientists believe, none speak to this exact relationship, and so this answer is out of scope.

Correct. Argument or Facts:
Facts

Question Type:
Must Be True

Stimulus Summary:
Old belief — Euclidean geometry was the only correct way to use math to represent the universe
New belief — Certain sciences are helped more with non—Euclidean geometry, including the widely accepted cosmological theory

Answer Anticipation:
This is one of those Must Be True questions where it's hard to have a solid anticipation. The stimulus brings up an old belief and a new belief, and it provides a specific example. There are no conditionals or strong statements to take inferences from. We might end up with a generalization from the situation, but we should make sure that we understand the stimulus and then head to the answers ASAP to spend our time there.

Answer Explanation:
The example given in the stimulus supports this answer, so it's correct. To believe that something isn't uniquely" capable of representing something, all that needs to be shown is that there's another thing that can work, as well. Here, it's established that there are areas where scientists believe non—Euclidean geometry can describe the universe in a more useful manner—and it wouldn't be useful to a scientist if it weren't correct.

Key Takeaway:
When the stimulus isn't giving you a lot of stuff to work with in a Must Be True question, try to get to the answer choices as soon as possible. There's a good chance that the correct answer will be a generalization supported by a specific piece of information in the stimulus.

Incorrect. The stimulus notes that non—Euclidean geometry is more useful in certain areas, so this answer is too broad in stating that it's more complete."

Incorrect. This answer is contradicted by the stimulus. Euclidean geometry is noted as being believed to be the only" way to correctly represent the universe for many centuries, during which scientific theories that we still believe to be accurate were developed. Since multiple theories were developed using the same way of mathematically representing the universe, developing those theories can't require the development of a unique type of math.

Incorrect. There's no indication that usefulness and correctness aren't inherently linked.