When analyzing an argument, why is it important to understand the speaker or writer's audience?

HELP ASAP PLEASE

A: Understanding the audience can help you prove whether the evidence presented by the writer is valid.

B: Knowing who the intended audience is can lead you to more readily accept the author's claim.

C: Understanding the audience can help you determine the author's purpose and what he or she hopes to accomplish.

D: Knowing who the intended audience is can help you decide whether you should attend to the argument or not.