Final answer:
The hurt that Drew is feeling most likely involves activity of the brain's Anterior cingulate cortex.
Step-by-step explanation:
The hurt that Drew is feeling most likely involves activity of the brain's Anterior cingulate cortex. The anterior cingulate cortex is involved in processing emotional and social pain. In this case, Drew's feeling of isolation and disconnection from others in the 12-step meetings is causing him emotional pain, which is likely reflected by activity in the anterior cingulate cortex.