According to the in focus box, "gender differences in responding to stress," a study investigating the effect of hormones on stress reduction found that healthy men who received a dose of the hormone before being subjected to a stressful procedure were less anxious and had lower cortisol levels than the men whom received a placebo.

"... the healthy men who received a dose of the hormone oxytocin before being subjected to a stressful procedure were less anxious and had lower cortisol levels than the men whom received a placebo."

Oxytocin is an anti-stress hormone that lowers anxiety, cortisol, and blood pressure.

answer; i believe the correct answer is prefrontal cortex;

is there multiple choice or do you need like an essay answer?