PrepTest 159, Section 2, Question 18
Since 1929, cosmologists have known that the universe(446 more words not shown)
The primary purpose of the(7 more words not shown)
- Asummarize the results(14 more words not shown)
- Bindicate a criterion(10 more words not shown)
- Cillustrate the significant(8 more words not shown)
- Dpropose an experiment(9 more words not shown)
- Eoutline the technical(13 more words not shown)
Reading the passage
The final sentence asks, in effect, how readily we can check a theory. If the revised account of gravity has consequences in our own solar system, those consequences could be tested nearby. That is a possible practical advantage over the dark-energy account, even though it doesn't tell us which explanation is true.
Working the answers
- A
No test results are reported. The author says the implications could be tested, not that tests have already confirmed or rejected the theory.
- BCorrect
Ease of testing is a criterion for evaluating a theory, and the sentence says it may favor the second explanation. The advantage is comparative; the first theory isn't declared impossible to test.
- C
The sentence identifies an advantage of the radical proposal, not an obstacle preventing scientists from questioning an established theory.
- D
Saying tests could be performed isn't proposing a particular experiment. No procedure or specific result that would undermine dark energy is supplied.
- E
The sentence doesn't list equipment, precision, or other technical requirements. It tells us why testing may be more accessible, not what a test would technically require.
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