Gaia Glances Over at Her Roommate, Who Is on the Phone

Multiple Choice

Gaia glances over at her roommate, who is on the phone with her mother. She watches as her roommate's facial expressions change from happy to sad to angry as she progresses through the phone conversation. Which area of Gaia's brain is most likely to change activity as she processes the different facial expressions? ​

A) hippocampus
B) amygdala
C) insula
D) striatum