GCECivic EducationDrug Abuse2019

Drug dependence differs from drug tolerance in that drug dependence involves

Athe body requiring larger doses to achieve the same effect
Ba compulsive need to continue taking a drug despite harmful consequencesCORRECT
Cthe gradual reduction of a drug's effect on the body
Dthe immediate allergic reaction to a newly administered drug
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Why the answer is B, and why the others tempt you.
Drug dependence is characterised by a compulsive craving and need to use a substance to function, even when aware of its harmful effects. Drug tolerance, by contrast, refers to the body's adaptation requiring increasingly higher doses to produce the same effect—this describes option A. Options C and D describe different pharmacological phenomena unrelated to dependence.
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