We knocked on the door but nobody answered, 'But' is which part of speech:...? Mcqs

We knocked on the door but nobody answered, 'But' is which part of speech:...?

(A) Adverb

(B) Conjunction

(C) Interjection

(D) Adjective

Source: This question is taken from the Assistant (bs-16) various departments Clubbed Case-74-2024 PPSC Past Paper (Morning)