Choose the correct word:
Dr. Ahmed Zewail made _____ contributions to femtochemistry, earning the Nobel Prize in Chemistry in 1999.
Answer and explanation
Correct answer: C. pioneering
- Step 1: Examine the honorific context of the sentence: the sentence describes Nobel Prize-winning scientific breakthroughs that founded the field of femtochemistry (monitoring molecular transitions in femtoseconds).
- Step 2: Select the fitting evaluative adjective: "pioneering" describes groundbreaking, innovative work that opens new frontiers in an academic discipline.
Answer
pioneering.
Why not the others: "negligible" means so small or unimportant as to not be worth considering; "regressive" means moving backward or deteriorating; "trivial" means of very little value or significance (all three directly diminish rather than praise monumental scientific achievement).
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