Final answer:
Shailyn uses proximity to become more attractive to Jax; Jax assumes her diligence is a personal trait, showing the fundamental attribution error. Correct option is C.
Step-by-step explanation:
Shailyn is attempting to leverage the factor of proximity by making sure she is seen often by Jax in their shared classes. This increased visibility could potentially lead to the familiarity effect, where the mere exposure to an individual increases their attractiveness.
However, since they never talk and Jax assumes she is very diligent, Jax is falling victim to the fundamental attribution error, which is a bias where people attribute another's actions to their character or personality (internal factors) rather than situational factors. Therefore, the correct answer is C) Proximity: Fundamental Attribution Error.