When treating social phobias, the addition of D-cycloserine has been noted to enhance the response to behavior therapy. How does D-cycloserine promote fear extinction?

A. Dopamine 2 receptor blockade

B. GABA-A receptor activation

C. Muscarinic receptor blockade

D. NMDA receptor activation

E. Serotonin 1-A receptor activation

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Mini Quiz: Social Phobias

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