Define the concept risk behaviour and explain why it is important for teenagers to investigate and be knowledgeable about it

A risk behavior is a behavior that carries some form of risk. In the case of teenagers and health risk this can include habits that can be particularly dangerous toward their and other now and future health. protected sex for example is a risky behavior which could cause STD infections. 

Being knowledgeable about risk behaviors is a requirement in order to keep teens safe, and develop solutions to such dangers. 

Maybe you can delete everything you have had for catfishing for example convos, phone numbers, pics, etc. and possibly get a new email for new accounts just so you can start fresh as yourself not someone else