BI-985
Menstrual cycle
Biology · Secondary 3 · Hard · Menstrual cycle
A woman’s menstrual cycle length varies between 26 and 32 days. She has intercourse only on day 4 of one cycle and on no other day. Which statement best describes her chance of becoming pregnant from this intercourse?
- Very low, because it is far from the fertile days around ovulation.
- Very high, because any day in the cycle is equally fertile.
- Zero, because no sperm can survive until ovulation.
- Highest only when the cycle is 26 days long, but low when it is 32 days long.
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