One Explanation for Why Counseling Approaches Like Cognitive-Behavioral Therapy and Mindfulness

One explanation for why counseling approaches like cognitive-behavioral therapy and mindfulness training may be effective in reducing emotional arousal is:

A) they help the cortex regulate the amygdala or other structures associated with fear.
B) they help the amygdala regulate the cortex or other structures associated with fear.
C) they focus on regulating neurotransmitters.
D) none of the above.