The correct answer is: D. No improvement
The sentence “As the poet ages, he naturally writes with sorrow of the process of decay in life and time” is grammatically correct and conveys the intended meaning effectively. The preposition “in” is used correctly to indicate that the poet is writing about the process of decay that occurs in both life and time. The article “the” is not necessary before the noun “time” because it is not being used to refer to a specific time period.
The other options are incorrect for the following reasons:
- Option A: “in a life and a time” is grammatically incorrect because the preposition “in” is used twice. The article “a” is also unnecessary before the noun “life” because it is not being used to refer to a specific life.
- Option B: “in life and time” is grammatically correct, but it does not convey the intended meaning as effectively as the original sentence. The article “the” is not necessary before the noun “time” because it is not being used to refer to a specific time period.
- Option C: “in life and the time” is grammatically incorrect because the article “the” is used before the noun “time” when it is not necessary.