Digital PSAT Reading and Writing Practice Question 57: Answer and Explanation

Question: 57

The findings at Fermi Lab are at once unsettling, in that they will soon necessitate a considerable reform to our understanding of particle physics, __________ titillating in that they may well lead to a more sophisticated and penetrating understanding not only of particle asymmetry but also of the nature and origin of the universe itself.

Which choice completes the text with the most logical transition?

  • A. but
  • B. and
  • C. moreover
  • D. for

Correct Answer: B

Explanation:

(B) When using the phrase at once . . . one needs to use and to transition to the second item in the list. Why? Because these two things exist at once, so and is an appropriate way to join them to one another.

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