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GRE Verbal Reasoning QUESTION #8005
Question 1
Under ethical guidelines recently adopted by the National Institutes of Health, human genes are to be manipulated only to correct diseases for which ------- treatments are unsatisfactory.
  • similar
  • most
  • dangerous
  • alternative✔️
Correct Answer Explanation
The sentence discusses when gene manipulation is ethically permitted. It makes sense that gene therapy would only be used when other treatment options have failed. Alternative is correct: human genes should only be manipulated when alternative (other available) treatments are unsatisfactory, making gene therapy a last resort.