Digital PSAT Reading and Writing Practice Question 151: Answer and Explanation

Question: 151

Alongside the Watson-Crick "Double Helix" and Einstein's "Equation of General Relativity," the Periodic Table of Elements is among the most important and instantly recognizable features of modern science. ______ the table as we know it today emerged just 150 years ago, the story of its conceptual evolution goes all the way back to Ancient Greece, when Aristotle proposed that all mass is composed of a mixture of simple elements.

Which choice completes the text with the most logical transition?

  • A. While
  • B. Since
  • C. Given
  • D. If

Correct Answer: A

Explanation:

(A) This is the only option to provide the needed contrast between the relatively recent origin of the periodic table and its ancient inspiration.

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