According to the textbook, Julie, a seventeen-year-old living in a college dormitory, has noticed that her menstrual periods have begun to synchronize with _____, which is compelling evidence that social relationships can affect biological functioning.

Question

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The best choice is A because menstrual synchronization refers to the tendency for women who live together to have their menstrual cycles become more synchronized over time. This is believed to be due to pheromones that are released by one woman and affect the hormonal cycles of another woman. Therefore, Julie's menstrual periods synchronizing with her female roommate is compelling evidence that social relationships can affect biological functioning. The other choices (B, C, and D) do not relate to menstrual synchronization in the same way.

According to the Textbook, Julie, a Seventeen-Year-Old Living in a College