Answer:
c. quid pro quo
Step-by-step explanation:
Quid pro quo harassment occurs when some authority figure offers or hints that he or she will give the person something in return (a reward, a promotion, a good grade) if that person satisfies a sexual demand.
The expression "quid pro quo" translates to "something for something" so it literally means that the authority figure will give something in exchange for other thing.
In this example, Claudia is told by her professor that if she wants to receive a good grade on her final exam she will need to come to his house for dinner and private tutoring. We can see that the professor is asking something (Claudia to come to his house) in exchange of something (a good grade). Thus, this is an example of quid pro quo harassment.