The answer is a) human rights issues
It's important to stay loyal in life so you attract positive people around you. To have a good personality, you will be surrounded by people who are like you.
The answer is a long way gone in the chapter 10. Since in chapter 10, Beah tells about the event which is positive in their memory and bring them emotional pain at the longing they produce. The story of musa disturbs the boys for a period and even leads Beah into contemplation about his grandmother but the fact that these pleasant circumstance are memory and not reality is not a lost in the boys.