Which Person Is Most Vulnerable to the Development of Psychiatric

Which person is most vulnerable to the development of psychiatric illness based on sociocultural factors?

A) A 16-year-old who has a parent with bipolar disorder
B) A 55-year-old who has retired with full pay from a job as a high school teacher
C) A 24-year-old who was raised by a grandparent after both parents died in a plane crash
D) A 67-year-old from a minority group who is poor and has no social support system