Which statement correctly reflects the reported probabilities of conception with different intercourse frequencies?

Which statement correctly reflects the reported probabilities of conception with different intercourse frequencies?

• A. 1 time per week: 17%; 3 times per week: 50%
• B. 1 time per week: 25%; 3 times per week: 60%
• C. 1 time per week: 10%; 3 times per week: 40%
• D. 1 time per week: 20%; 3 times per week: 45%

Answer: (A)

Conception probability per cycle rises when you have intercourse more often because you increase the chances that sperm are present during the fertile window, when ovulation occurs. Sperm can survive for several days and the egg is viable for about a day, so having intercourse about three times a week around that window substantially boosts the opportunity for fertilization. The figures commonly cited reflect this: roughly 17% per cycle with one act weekly, and around 50% per cycle with three acts weekly. This captures the idea of a meaningful, not perfectly linear increase in probability as frequency rises. The other options don’t align with these standard per-cycle estimates, which is why this pairing fits best.

Conception probability per cycle rises when you have intercourse more often because you increase the chances that sperm are present during the fertile window, when ovulation occurs. Sperm can survive for several days and the egg is viable for about a day, so having intercourse about three times a week around that window substantially boosts the opportunity for fertilization. The figures commonly cited reflect this: roughly 17% per cycle with one act weekly, and around 50% per cycle with three acts weekly. This captures the idea of a meaningful, not perfectly linear increase in probability as frequency rises. The other options don’t align with these standard per-cycle estimates, which is why this pairing fits best.