Question

what is the main reason a speaker might use exclusive language?
to establish the speakers credibility
to highlight differences between opposing sides
to provide facts that will tap into the audiences emotions
to appeal to an audiences sense of hope

Explanation:

Exclusive language is used to create a sense of separation or distinction. Highlighting differences between opposing sides is a common use - it emphasizes contrasts. Establishing credibility is more about evidence and authority, providing emotional - tapping facts is about content rather than language type, and appealing to hope is not the main function of exclusive language.

Answer:

to highlight differences between opposing sides