A double dissociation has been demonstrated between people with damage to the ________, who show impairment in the explicit or declarative aspects of fear conditioning, and people with damage to the ________, who show impairment in the implicit or nondeclarative aspects of fear conditioning.

a. basal ganglia; frontal lobe.

b. amygdala; basal ganglia.

c. hippocampus; amygdala.

d. frontal lobe; hippocampus.