Which of the following statements is true of the biological factors implicated in the development of depressive disorders?

Question

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Research has consistently found that individuals with depression have reduced levels of neurotransmitters such as serotonin and norepinephrine, and that they have fewer receptors for those neurotransmitters. This suggests that there is a biological basis for depression. Choices A and B are false; depressed individuals show lower levels of brain activity in the prefrontal cortex and the reward center of the brain. Choice C is also false; possessing genes linked with depression increases one's risk for depression, regardless of their social environment.

Which of the Following Statements Is True of the Biological