What term is commonly used for a formal response to a question or prompt?

The term that is commonly used for a formal response to a question or prompt is "Response." This word is widely recognized in both everyday language and professional settings as the appropriate term for an answer or reply to an inquiry. It encapsulates the idea of providing information or feedback in reaction to a specific question or stimulus, making it relevant when discussing communication, interviews, reports, or any formal exchange where answers or feedback are required.

In contrast, while "Reply" might be used casually, it lacks the formality that "Response" conveys. Similarly, "Statement" typically refers to a declaration or assertion rather than a direct answer to a question. "Return" is more ambiguous and does not specifically connect to the act of responding in the context of communication or answering inquiries. Thus, "Response" is the most accurate term to describe a formal answer to a question or prompt.