The purpose of learning about your audience, asking questions before presenting, and analyzing the diversity of your audience is to be able to:

tailor your speech to meet the audience's needs

Explanation:

Audience analysis is the term that is used to describe the process of analyzing the audiences beliefs, thoughts, perception and interests before delivering any speech before them. This helps in better representation of the ideas of the speaker by given the appropriate references. Understanding the audiences perspective is also important to help in better delivery of ideas and speech and in proper manner.

b. legendary founder of thebes