Topic: Adverb (ক্রিয়াবিশেষণ),

Best Answer Explained in Below-:

In the sentence "The student has carefully submitted her examination paper," the focus is on identifying the correct form of adverb. Adverbs modify verbs, adjectives, or other adverbs and often explain how, when, where, or to what extent something occurs.

In this case, "carefully" is the only adverb among the options provided. It modifies the verb "submitted" and indicates the manner in which the action was performed; that is, the student submitted her examination paper with care or attention. This is crucial because it enhances the meaning of the sentence by providing additional context about the submission.

The other options—"paper," "examination," and "student"—are all nouns.

1. "Paper" refers to the examination document itself.
2. "Examination" describes the type of paper.
3. "Student" identifies who is performing the action.

While these nouns are essential for understanding the overall meaning of the sentence, they do not function as adverbs. Hence, the correct choice that answers the question about the form of adverb is indeed C) carefully. Understanding the role of adverbs in sentences helps clarify how actions are performed, adding depth to the reader's comprehension.