Answer:
B.indicates a state of questioning
Step-by-step explanation:
An interrogative verb is used in interrogative sentences, ie these verbs indicate a state of inquiry. The explanation sounds too simple, but it's the best way to tell what an interrogative verb is.
It is important to use the correct verbs depending on the meaning you want to convey in the sentence. For example, you cannot use an interrogative in an affirmative sentence, because that verb will pass incorrect information. It will seem that you are asking something rather than stating something.