Since Carter's Mother Suffers from Depression and His Father Is

Since Carter's mother suffers from depression and his father is an alcoholic, Carter is often neglected. Despite his circumstances, he maintains a positive outlook. What may be helping Carter to maintain his positive attitude?

A) the belief that things will eventually get better
B) his circle of friends and their activities
C) looking toward the future and to living on his own
D) understanding his parents' problems