Correct Answer: What is disturbing you?

Solution : The correct choice is the third option.

Active voice is a sentence construction where the subject performs the action stated by the verb. It typically follows a subject-verb-object order, conveying a clearer and more direct message. In active voice, the subject is the doer of the action.

The structure of the interrogative sentence in the active voice in the case of the present continuous tense is: "What + is + present participle of the main verb + object?"

Therefore, the active form would be: " What is disturbing you? "