When Tomoko joined a sorority at her university, she had to learn her sorority's song, call other members of the sorority "sister," and wear shirts with the logo of her sorority. Tomoko is undergoing through which social process

Conformity Adaptation

Explanation:

Adaptation is a word we use to suite ourselves in a particular circle without a connotation of negative pressure to conform. Tomoko is learning in this case the guidelines of her association; hence she is trying to conform to available standard of association.

What are the possible options. I think I know the answer but I don't know your possible answers.