Present Evidence About the Biological Origins of Depression Supports the View

Present evidence about the biological origins of depression supports the view that ________.

A) reduced levels of norepinephrine cause depression
B) depression involves oversensitivity of the receptor sites on postsynaptic neurons
C) depression is linked to structural defects in the cerebral cortex and the limbic system of the brain
D) excess levels of dopamine in the limbic system are the main causal agent for depression