Despite the initial skepticism, the scientist's groundbreaking research (a) eventually (b) yielded (c) irrefutable evidence, (d) vindicating his hypothesis and (e) revolutionized the field of quantum physics.
Correct: A
The sentence describes a sequence of events in the past. The past tense "yielded" is appropriate because it shows that the evidence was produced at a specific point in the past. "Eventually" modifies the verb "yielded" and indicates the timing of the event. Thus, (A) is correct.