Institution: Directorate of Nursing Services (DNS) Exam: ডিপ্লোমা ইন নার্সিং ভর্তি পরীক্ষা। ২০২২-২০২৩ || নার্সিং(Nursing) ভর্তি পরীক্ষা || 2023
Topic: English literature, Subject: English Grammar (ইংরেজি গ্রামার)

Best Answer Explained in Below-:

The question asks for a transformation of the complex sentence "He woke up when it was raining" into a simple sentence. In this case, the phrase "when it was raining" acts as a temporal clause that describes the specific time at which he woke up. A simple sentence typically contains a subject and a predicate without any dependent clauses.

Option C, "He woke up at the time of raining," maintains the essence of the original clause, preserving the temporal aspect by directly indicating that he woke up during the rain. Although it is a bit awkward in phrasing, it effectively conveys the same meaning that he woke up at a moment characterized by rain.

In contrast:

- Option A introduces an "and," creating a compound sentence rather than a simple one.
- Option B changes the meaning entirely by implying he woke up after the rain stopped, which is not consistent with the original statement.
- Option D also alters the meaning by suggesting he woke up after the rain, which is different from the original temporal context.

Therefore, Option C is the only choice that reconstructs the original sentence into a simple format while preserving the intended meaning.