Answer: The correct option is C: Ethnic assumptions.
Step-by-step explanation:
An ethnic group is a category of people who share similarities in terms of language, history, society, and culture. In the situation proposed, ethnic assumption refers to idea of supposing a person is capable of doing something correctly because of their ethnicity. Although Jen is Korean-American and may speak Korean perfectly. The fact that she's part of an Asian ethnicity group, does not mean she's able to speak all the languages of Asian countries.