Which statement best identifies what the debate revealed about modern presidential campaigns

D: Candidates need to pay attention to how their personal appearance might affect public appearance.

Despite the other options being other relevant factors in a presidential campaigns, the D statement is the one that relates best to the facts told in the excerpt. As it describes how their appearance influenced public opinion, and considering how television (and now internet) gained relevance over radio on the following decades after 1960.

i know social security wasn't one.

explanation:

hope my answer has you!

it provided for equal trade rights among nations in china.