What appears to be the primary purpose of this passage?

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GMAT Verbal Reasoning Practice Test 2 — practice the complete quiz, review flashcards, or try a random question.

The questions in this group are based on the content of a passage. After reading the passage, choose the best answer to each question. Answer all questions following the passage on the basis of what is stated or implied in the passage.   Although hard statistics are difficult to come by, there is substantial anecdotal evidence that use of performance-enhancing drugs, or doping, is rampant in professional sports. Of perhaps greater significance to society are the estimated 1.5 million amateur athletes who use steroids, either to improve their appearance or to emulate the performance of their... Show more

What appears to be the primary purpose of this passage?