Why is douching ineffective in preventing pregnancy?
a. Seminal fluid sticks to the vaginal walls, preventing sperm from being killed.
b. It may push sperm through the cervix faster than had a person not douched.
c. Semen is an acid-like substance that counteracts the effects of douching.
d. Douching kills bacteria that helps sperm swim to the fallopian tubes.
Answer: B
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