I dont know what novels and films you studied but ill try to write a starter to your essay!
ok so
Themes developed in (name and other of books and films) all demonstrate the central idea of power of words. For example in (book or film) it states, "
so yea thats a start good luck!!
Speakers use colloquial diction intentionally in order "to align themselves with the audience".
• Colloquial diction refers to the use of local or informal expressions. It is necessary in order for the speaker to be more comfortable with the audience.
• Using colloquial diction is also vital for the audience to understand the message that the speaker is passing.
• Option B is incorrect. Speakers don't use colloquial diction because they don't have other ways of speaking.
• Option C is incorrect. Using colloquial diction doesn't mean that it's cooler.
• Option D us incorrect. Using colloquial diction doesn't mean that the speaker doesn't want to speak to people that are not in a particular group.
• The correct option is "to align themselves with the audience".