C. The words uttered must reflect a positive light on the American government
The foot-in-the-door phenomenon refers to the tendency to comply with a large request if one has previously complied with a small request.
I believe the answer is: b. interviewing people who are in the news.
By interviewing people who are in the news, Political candidates could have a platform to give further explanation regarding their past actions or plan in the future. This will keep the audience informed regarding what's going on in the government and help them to make their decision in the next election.
Lack of tree covers is answer a