"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? "

the amygdala

Explanation:

Gaia's area of the brain that is mostly likely to process the different facial expression is the amygdala. This part of the brain has neurons the shape of almond and is found in the deep side of the medial temporal lobe of the brain. It is the part of the brain that plays an important role in emotions processing and is a part of the limbic system.

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answer; strength of association;