All of the following are methods that drugs use be adminstered except
a ingestion
b inhalation
c peer pressure
d direct contact

The correct answer is C.

Ingestion, inhalation and direct contact are all physical methods in which drugs can be administered or taken directly into the body to get the desired effect. Peer pressure is a concept, it is the pressure exerted on you by another person to do something you do not want to do but peer pressure does not directly administer a drug into your body.

abuse and or domestic violence!

: )