Answer:
Instagram
Step-by-step explanation:
Cyberbullying or cyberharassment is a form of bullying or harassment using electronic means. Cyberbullying and cyberharassment are also known as online bullying. It has become increasingly common, especially among teenagers.
Recently, most of the cyberbullying reported have been from Instagram. Instagram have been seen as by most teenagers as a matured social media, hence, they are easily bullied.