The trustworthiness of a speaker adds to the speaker's "appeal to reasoning" although it should be noted that it also contributes to the speaker's reputation.
In general B is correct. For example, you would use this if you are asking Mayor Cortez to add a speed limit sign on your street.
If you are writing a social business letter e.g inviting Mayor Cortez to your house for tea, you may use C.
Answer: he finds it uncomfortable
Explanation:
Don’t be rude it is only 13 points