It can mean that you can get what you want easier when you're being nice.
The moral dilemma that this excerpt from The Tragedy of Julius Caesar by William Shakespeare, talks about is where Brutus has to decide if to help in the plot to kill Caesar. Caesar is going to be crowned. Brutus is not sure whether Caesar will become corrupted due to the power and then change his nature.
1) B. Sentinel is a soldier or guard whose job is to stand and keep watch
2)C I think