How exactly i don't know much about this app
The answer is A. Because a chart showing brain size of various animals tells the intelligence of each animal and also compares them.
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.
B because everyone was scared they would take one of their loved ones or them. (Guessing this is the hunger games book)