Topic: Adverb (ক্রিয়াবিশেষণ),

Best Answer Explained in Below-:

The adverb "carefully" in the sentence "He writes carefully" describes how the action of writing is performed. This indicates the manner in which the subject (he) conducts the action (writing). Adverbs of manner specifically provide information about the way an action is carried out, often answering the question "how?"

In this instance, "carefully" implies that the subject pays close attention and takes precautions while writing, reflecting a thoughtful and deliberate approach.

The other options—degree, time, and place—serve different functions and are not applicable in this context. Degree adverbs modify the intensity of an adjective or another adverb (e.g., "very" or "quite"), while time adverbs indicate when an action occurs (e.g., "yesterday" or "soon"), and place adverbs describe where an action takes place (e.g., "here" or "there").

Since "carefully" conveys the specific way in which the writing occurs, it is categorized as an adverb of manner, making option A the correct choice.