According to the critical thinking box on smoking and psychological disorders, what is one possible explanation for the fact that people with psychological disorders have a much higher rate of smoking than people who do not have a psychological disorder?

Quick using the information in the graph, one might speculate that a) w.w.i created increased job opportunities in the u.s. b) the election of president hoover in 1936 caused unemployment to decline. c) the return of soldiers following w.w.ii caused unemployment to increase in the u.s. d) the new deal programs of president roosevelt created employment opportunities in the u.s.