B, Matthew is skipping meals which is a harmful behavior in its self, as well as smoking and sleeping at random hours.
Condoms reduce the risk of pregnancy as well as STDs. They are the only form of birth control that protects from STDs, currently.
Hope that helped you.
I would say the last option students who bring weapons to school are acting on the rage they feel as victims of harassment.
Answer:
I was at risk of having diabetes, so I stopped eating sugary things and always made sure my blood sugar was low.