Which Piece of Data Would Provide the Strongest Evidence for the Idea

question 30

Multiple Choice

Which piece of data would provide the strongest evidence for the idea that transexuality has a biological basis?

• A) The presence of a gene that occurs only in transexual individuals
• B) An increase in the number of transgenders seeking sexual reassignment surgery
• C) A study showing that transexual behavior can be suppressed by psychotherapy
• D) A study of identical twins showing that one twin is transexual and the other is not
• E) A large group of genetic males who choose transvestism over gender reassignment

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