Digital PSAT Reading and Writing Practice Question 180: Answer and Explanation
Question: 180
Some will contend that the true problem of retrosynthesis lies not in the end-products, but rather in the byproducts and novel synthetic intermediates required to artificially reproduce biochemical compounds. It must be acknowledged that this is indeed a valid concern. The design of stable synthetic intermediates not found in nature has at times led to unforeseen consequences. Methylenedioxymethamphetamine, _______ is a dangerous and highly concerning drug of abuse among youth.
Which choice completes the text with the most logical transition?
- A. on the other hand,
- B. in contrast,
- C. for example,
- D. due to this,
Correct Answer: C
Explanation:
(C) The previous sentence makes a broad statement about the unforeseen consequences of synthetic intermediates design, while the final sentence gives a specific elaboration about one of these consequences. Thus, "for example" is the only logical possibility.
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