Explanation
Correct answer: C.
Choice C is the best answer. The convention being tested is the use of a verb to express tense in a sentence. In this choice, the past tense verb “finished” is consistent with the other past tense verb (“retired”) used to refer to Girgrah’s retirement in 2004.
Why the other choices are wrong
Choice A
Choice A is incorrect because the present tense verb “finish” isn’t consistent with the other past tense verb (“retired”) used to refer to Girgrah’s retirement in 2004. Furthermore, the plural verb “finish” doesn’t agree in number with the sentence’s singular subject “The Yemeni American athlete.”
Choice B
Choice B is incorrect because the present perfect progressive tense verb “has been finishing” isn’t consistent with the other past tense verb (“retired”) used to refer to Girgrah’s retirement in 2004.
Choice D
Choice D is incorrect because the future progressive tense verb “will be finishing” isn’t consistent with the other past tense verb (“retired”) used to refer to Girgrah’s retirement in 2004.