Select the alternative that will improve the highlighted part of the sentence. In case there is no improvement select “No improvement”.
Success and failure in life depends on how well a person uses his time.

Correct option is D

The correct substitution of the highlighted part is (d) depend on.
Explanation:
· The subject of the sentence is plural: “Success and failure” - two elements.
· Therefore, the plural verb “depend” should be used. “Depends” is singular.
Grammatical Rule Used:
Compound subjects joined by “and” take plural verbs.
Example: Honesty and hard work make a man great.
Correct Success and failure in life depend on how well a person uses his time.