Answer: Experiencing an Identity crisis
Explanation:
Erik Erikson invented the term identity crisis, and defined it as a struggle between identity and role confusion at different stages of a person's life. When a person experiences an identity crisis, they may try different roles, looking for one that is the fit for them. This is what Maggie is doing by changing her major.
According to James Marcia, another researcher who worked on the Identity crisis theory, the solution to this dilemma is to commit to an identity.