A) exosystem. The exosystem involves the interactions that the child does not directly participate in but that do affect the child and his/her microsystem. For example, a child's parent getting fired from his/her job constitute a change in the child's exosystem that can directly affect the child.
Mike had shown many dangerous warning signs. 1)cutting classes 2)suffering grades 3)less time with friends 4)talking down about himself 5)driving really fast, and dangerously 6)bad hygiene -hope this helps :3