In order to study the effect of television on an audience, a student watches old tv shows and compares them to new ones. this is an example of:

   Content analysis

Explanation:  It is a method for analysing different formats such as text, audio or in this case video (television), therefore, the media. So it examines, researches, analyses content on a number of aspects. There is no focus on the impression of some text or video content, which is actually an evaluation. The focus here is on exploring which phrases or words are used, which depends on the time, therefore in the spirit of the times, so as such it is variable after a number of years. That is why students who do this kind of content analysis review and compare old TV shows with today's ones. It means summarising what patterns of communication are present, that is, words, phrases, topics, and how much their representation is in communication, that is, researching the quantity of those words and phrases.

president reagan was a good presidant and should be presidant if he was still alive

explanation:

there are no options provided but you can choose among the following gender-neutral pronouns: zir, hir, eir, vis, tem, eir.

in the normal course of maintaining a pronoun-antecedent agreement, we could have used the words his or her but since we are also required to use gender-neutral language, we need to replace it with its equivalent gender-neutral pronoun.