Answer:
Mail
Explanation:
The noun 'mail' is the subject, as it is what the sentence is talking about.
Answer:
Evidence
When you see "Was supported by", it most definitely means Evidence.
It's most likely D, having little value.
Context clues:
Fans want to hear the important parts of the game, so if he is trying to "annoy" them, he must not be saying anything important. So it's "having little value".