Answer:
"Group Polarization"
Explanation:
According to my research on the different social psychological terminology, I can say that Larissa's shift or intensification of her opinion can e called "Group Polarization". This is a term that refers to the tendency of a group or person to make a choice that is way more extreme that their initial belief. This is what is going on because, Larissa's belief on animal rights did not change but it did intensify greatly after the rally.
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