The correct answer is C. One's sense of self
Step-by-step explanation:
Behaviors, including those related to alcohol or drug abuse, are often influenced or prompted by internal and external influences. In the case of internal influences, these are related to inner factors or factors that emerge from the individual such as own ideas about alcohol, self-esteem levels, anxiety, among others. According to this, the one that is an internal influence to drink alcohol is one's sense of self because this factor is related to the individual itself; additionally, low-self esteem or a negative sense of self can make individuals drink. On the other hand, factors such as TV commercials or alcohol availability are external rather than internal factors.