Topic: Sentence (বাক্য),

Best Answer Explained in Below-:

The question structure in English often requires specific interrogative words to elicit the desired information. In the example provided, "_____ is his job?" is asking for a definition or identification of the person's occupation. The correct term here is "What," as it is used to inquire about things, including jobs.

Hence, the phrase completes to "What is his job?" which directly seeks to know the individual's profession.

The second part of the response is "He _____ a policeman." Here, we must use the correct form of the verb "to be" in the present tense that corresponds to the singular subject "He." The correct form in this context is "is." Thus, the complete response becomes "He is a policeman," providing a clear answer that matches the question posed.

The other options fail to maintain grammatical accuracy. Option A ("Which / is") suggests exclusivity and is not typically used for asking about a person's job, while Option B ("What / are") uses an incorrect verb form, and Option D ("Where / is") inappropriately shifts the focus to location rather than occupation. Therefore, the correct answer is indeed C: "What / is."