Question : Directions: In the question, a part of the sentence is in bold. Below are given alternatives to the bold part at (1), (2), and (3) that may improve the sentence. Choose the correct alternative. In case no improvement is needed, your answer is (4).
The advancement in medical science had proved to be a boon fo all of us.
(1) has proven
(2) had proven
(3) have proven
(4) No Improvement
Option 1: (1)
Option 2: (2)
Option 3: (3)
Option 4: (4)
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Correct Answer: (1)
Solution : The sentence can be improved using the first option .
"Has proven" is the correct verb tense to use here, because it indicates a past action with present relevance. The advancement in medical science is still a boon in the present, so the present perfect tense "has proven" is appropriate. Moreover, the singular subject, the advancement in medical science agrees with the singular verb i.e., has .
Therefore, the correct sentence is: "The advancement in medical science has proven to be a boon for all of us."
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