Shannon has been using heroin for two years.Lately, she has found she must inject higher and higher dosages of the drug to get the same high she has come to

Shannon has been using heroin for two years.Lately, she has found she must inject higher and higher dosages of the drug to get the same high she has come to expect from her drug use.What is the term for this need for higher dosages?
A)dependence
B)intoxication
C)addiction
D)tolerance


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