Digital PSAT Reading and Writing Practice Question 179: Answer and Explanation

Question: 179

Dark matter-unobserved material inferred to exist by its quantifiable gravitational effect on visible galaxies-is estimated to comprise roughly 23 percent of the universe by density. Visible atoms, _________, constitute less than 5 percent.

Which choice completes the text with the most logical transition?

  • A. meanwhile
  • B. as a result
  • C. due to this fact
  • D. precisely

Correct Answer: A

Explanation:

(A) Meanwhile provides a logical contrast between the relatively large percentage of dark matter and the relatively small percentage of visible atoms. None of the other options provides a logical contrast.

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