Jack Has Been Receiving Weird Text Messages Lately

Jack has been receiving weird text messages lately. His social media has also been inundated by trolls posting negative and hurtful comments. One troll has even gone so far as to tell Jack that he should commit suicide since he is a waste of space. He cannot seem to get away from these comments and messages. His parents don't usually check his social media, so they are unaware of what is happening to him. Jack is the victim of ______.

A) depression
B) anxiety
C) cyberbullying
D) sexting