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Multiple-choice, choose single answer
Read the text and answer the multiple-choice question by selecting the correct response. Only one response is correct.
The literature on drug addiction has grown at a rate that defies anyone to keep abreast of the literature, and apparently in inverse proportion to our understanding of the subject. Addiction, or dependence, as it is more fashionable to call it, excites controversy and speculation yet true understanding of the phenomenon remains elusive.In fact the area is fraught with speculation and acrimonious debate. Definition of terms such as drug,addiction, and abuse is obviously less controversial than attempts to explain the nature of drug dependence,yet even the terminology is imprecise and overlain with subjective connotations. At its most basic, a drug, as defined by the World Heath Organization, is simply any substance which when taken into the living organism may modify one or more of its functions. This kind of definition is too wide to be of any use in a discussion of dependence: it covers everything from insulin to aspirin, penicillin to alcohol.
The author implies that he thinks the term dependence in the context of drugs