The answer is C. "the man's behavour led me to guess...upset in someone."
Sentences A and B describe the actions and manners, showing the man's behaviour and anxiety: casting quick glances, his foot beating on the hot pavement etc. appearing he could even explode with anger. At some point (C), <em>he changed and just got calm, wainting silently, leading the speaker to wonder if the cause of all this could be the bus' delay.</em>
The anwser is B becauae they way he/she describes the passage of the way ahe looks
Ethanol or alcohol effects us in that way
A. Political Leader
The Vizier was in charge or organizing political ventures. The person in this position held high authority. He was not a bodyguard in any regard, nor a military leader. The religious leader would be another person.
