C. a comparison between two things to make information easier to understand.
Explanation:
For example if I said, she ran the track so fast, she was like a cheetah. To make it easy for the audience to understand what I meant when I said she ran fast I compared it to one of the many international symbols for speed, the cheetah. Some analogies can classify as similes or metaphors but not all will especially if they are two pairs of analogies.