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Question

Please read the following paragraph and then answer the following questions.
Birth control methods act at many points in the reproductive cycle. Some options, such as birth control pills, are highly effective at preventing pregnancy. However, only a few commonly available methods are effective at preventing the transmission of sexually transmitted disease (STD). The Center for Disease Control estimates that each year about 10 million new STD infections strike people ages 15 to 24.
A vasectomy ________.
A) prevents the production of sperm in the testes
B) prevents the production of semen
C) prevents the movement of sperm out of the testes
D) is an effective method to prevent the transmission of sexually transmitted disease

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