The first one is not true directly. However they use the media for fundraiser announcements and pleas for more money. This is probably the second best answer.
I think B is the answer. The media is intended to communicate information. What elected officials are doing is information <<<<
Unfortunately C is also correct. The media is used to spread messages (sometimes labeled propaganda.) Which to pick?
And so is D. Gallop polls certainly are of great interest to the media, also as much as they are of interest to the elected officials.
King Herod I is your answer
hope this helps