Which of the following supports Kaplan's triphasic model of sexual response?
A. The two physiological components, vasocongestion and muscle contractions, are controlled by different parts of the nervous system.
B. The desire for sexual fulfillment is one of the primary needs identified for humans and is physical, not psychological, in nature.
C. The sympathetic division of the autonomic nervous system controls both ejaculation and vasocongestion in men.
D. The parasympathetic division of the autonomic nervous system controls both the vaginal lubrication and the orgasm of women.
Answer: A
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