An example of a positive influence on avoiding alcohol abuse is C. Starting a school club. Thus, option "C" is correct.
Alcohol is an addictive substance that may represent a serious threat to health (both cognitive and physical health).
Alcohol addiction can be defined as negative behaviour associated with the inability of a person to leave alcohol consumption.
Advertising is a fundamental tool by which industries capt people that then may become alcoholics.
Thus, option "C" is correct.
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