The association between stress and mood disorders is inconsistent but it is clear that

A) stress has little effect on responses to treatment.
B) stress affects the likelihood of relapse.
C) people do not vary in their initial vulnerability to mood disorders.
D) most highly-stressed people get depressed.

Although the association between stress and mood disorders is inconsistent, research has found that stress can increase the likelihood of relapse for individuals with mood disorders. This suggests that managing stress may be an important aspect of treatment and prevention for these disorders. The other options are incorrect - stress can have a significant effect on responses to treatment, vulnerability to mood disorders can vary among individuals, and most highly-stressed people do not necessarily get depressed.