Having a question that you don't know the answer to can be frustrating. Luckily, you can use a variety of different tools to solve your inquiry. Depending on the question, you can use a search engine, conduct extensive research, or contact a professional. Before long, you'll be that much closer to finding the answer.

: something spoken or written in reply especially to a question. b. : a correct response.

However, the most general assumption is often that 'C' is the correct answer, due to which it can be called the most popular multiple choice answer.