Valentina First Started Smoking Cigarettes and Drinking Alcohol in High

Multiple Choice

Valentina first started smoking cigarettes and drinking alcohol in high school.After realizing that these drugs were not that harmful,she began experimenting with other,more dangerous drugs.In Valentina's case,tobacco and alcohol served as:

A) teratogens.
B) disinhibitors.
C) gateway drugs.
D) threshold drugs.