As Veronica has begun smoking marijuana a few times a week, she has become less interested in school, and her grades have started to suffer

The fact that her smoking has created difficulties in doing her schoolwork suggests that Veronica has developed a _____________ problem.
A) body image
B) menarche
C) gateway drug
D) substance abuse

D) substance abuse Substance abuse refers to the use of a substance (legal or illegal) to the extent that it creates difficulties in day-to-day life.