Ilayda assumes that her professors spend their free time reading books and engaging in intellectual conversation, because the idea of them spending their time playing volleyball or visiting an amusement park does not fit in with her stereotypes of professors. this exemplifies
a. availability heuristic.
b. confirmation bias.
c. representational bias.
d. stereotype bias.
c. representational bias.

Representational bias

Explanation:

Representational bias is about to make the judgment about an event under uncertainty. It comes under the type of heuristics. Heuristics can be described as these are the judgmental shortcuts is used when we need these shortcuts in an emergency. The heuristics are used basically to reduce the efforts and simplification of the task.  

There is some factor that affects the judgment of representative heuristics:

C. representational bias                                        

Explanation:

Representational bias: The term is given by Tversky and Kahneman.

The representational bias is defined as a cognitive bias that helps an individual to categorize a particular situation based on the previous belief or experience patterns of the same situation. It can be beneficial in a variety of situations yet have limitations as it leads to close-mindedness, for example, stereotypes. It can occur through memory recall.

the answer to your question is,

old stone age.

-mabel < 3