Answer:
c) Isaiah cooking his girlfriend a meat-free dinner because she is a vegetarian.
Explanation:
A stereotype is a type of prejudice in which people have a mistaken idea or belief about a things or group that is based upon how they look on the outside.
Stereotypes are usually related to the person's belonging to an specific culture, so people from other cultures mistakenly judge or make assumptions based on what they think they know of the another culture or what they've heard of it.
In these examples, all of them refer to beliefs one person has about one other person that is from a different culture (asian in case of a), Irish in b) and African American in d)) except from option c) where Isaiah is cooking his girlfriend a meat-free dinner because she is a vegetarian. In this last case, Isaiah is not making assumptions based on a culture that he doesn't really know but rather he KNOWS that his girlfriend is vegetarian and therefore she doesn't eat meat, thus, in this case this is NOT an example of stereotype.