The baseball player wished he could speak to his fans directly, instead of
having to address crowds of media representative.
A. NO CHANGE
B. journalist
C. reporters.
D. newscaster.

Reporters.

Explanation:

This one was a little harder because it could be either journalists or reporters interchangeably, since they are just about the same thing. The only reason reporters is the correct one here is because journalism ranges from  news/opinion/article writing and other press work such as on-site interviews mentioned above. It's too vague in comparison. Reporters, however, are more specific and work a more limited job of reporting on camera and holding interview sessions with important figures for a news story solely.

Also, the definition for "media representative" is an individual employed by a civilian radio or television station, newspaper, news company, magazine, periodical, or news agency to gather and report on a newsworthy event.

So, in this case, the best definition of that would be reporter.

the author motivation is to show the power of animal-human relationships.