Professor Zinn suggests that depression may stem from the impact of stressful experiences on molecular structures that control gene expression.The professor's suggestion most clearly highlights the importance of

A) explanatory styles.
B) epigenetic influences.
C) rumination.
D) learned helplessness.

The suggestion that depression may stem from the impact of stressful experiences on molecular structures that control gene expression aligns with the concept of epigenetic influences. Epigenetic influences refer to changes in gene expression that can occur due to environmental factors, such as stress. This suggests that the experience of stress can impact the expression of genes related to mood and may contribute to the development of depression.