Answer:
The Key to description is (A) giving the reader enough detail to form a picture in his or her mind.
Explanation:
Description means a spoken or a written representation of a person, event or object. When we describe anything to someone, we describe each and every detail of the thing we are talking about or referring to. It helps the reader or listener to create a picture in his mind about that thing. He would only be glued and interested in what the person is saying. Also, it would only give a clear picture of the thing being described.