Question

For the rhythm method to be successful, coitus (sexual intercourse) must not happen
A. during the first 10 days of the menstrual cycle.
B. 6 days prior to ovulation through 2 days after ovulation.
C. during the last 10 days of the menstrual cycle.
D. Both during the first 10 days of the menstrual cycle and during the last 10 days of the menstrual cycle.

Answer

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