Answer:
allusion
Explanation:
I'm pretty sure it's C.
There is nothing in here that adds credibility. There is allusion to social media, exaggeration of the effect it has on him, pathos to feeling bad for him or oneself because of social media, and caricature.
medical students
I want a job in the medical field
It reiterates that the Apollo 11 lunar landing is one of the most recognized NASA missions in history.