Final answer:
Meredith's assumption is a stereotype, an oversimplified belief or idea about Annie's preferences without considering her full range of interests.
Step-by-step explanation:
Meredith's assumption about Annie’s thoughts is referred to as a stereotype. A stereotype is a fixed, over generalized belief about a particular group or class of people. In this context, Meredith is applying a stereotype by assuming Annie's preferences without evidence that Annie only likes comedies, which does not take into account Annie’s full range of interests. It's important to avoid stereotypes, as they can lead to misunderstandings and limit individuals to one-dimensional labels.