Replace the bracketed word with one of the given options, which suitably replaces the word without changing the meaning of the sentence:
The (famous) scientist made groundbreaking discoveries in the field of physics.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. renowned.
Renowned means well-known and respected, which matches the meaning of famous in the context of a scientist who made groundbreaking discoveries.
The other options—notorious (known for something bad), infamous (having a bad reputation), and unknown (not famous)—do not fit the positive connotation of the sentence.