For question 4 the last option is “shield laws”

B. Mass Media. Explanation: The reason I would choose answer B is because that is the only logical answer to that there question.  Pollsters are people who take the public opinion but only analyzes them. The Bill of Rights are our rights not exactly our opinion. Public officials are law enforcers and Finally Mass media is the public opinions that they put on blast in the media. It's hard to get a clear answer on it.

C. Polls. Explanation: Polls are the public opinions on who should be in office. Which it is an important source of course. If this answer is incorrect then another good answer would be interest groups. The interest group focus on the public interests which is technically their opinion.

Hope this helps!

i dont know sorry why dont you looking it up on google