An operational definition defines the variable in very specific terms as to how it will be measured,manipulated, or changed. Thinking about drug addiction, which of the following choices is not an operational definition of drug addiction?

A.) A number of participants family members that have used drugs in their lifetime.

B.) Participants number of cigarettes smoked per day.

C.) Total amount of cocaine consumed within a 72 hour period by participant.

D.) Ounces of alcohol consumed in 24 hours by participant.