TOEFL Listening: TPO-TOEFL听力TPO - FP286E36U3L83A0XR$

Why does the professor mention that one of the applicants will give a talk on a topic the student is particularly interested in? A. To see if the student would enjoy joining the applicant's research team B. To suggest that the student may not totally agree with what the applicant has to stay C. To persuade the student to come to talk on Friday D. To warn the student to focus on the applicant's teaching ability