Emergency contraceptives are effective if administered within the following period after unprotected coitus –

Correct option is D

Sol. Emergency contraceptive pills (like Levonorgestrel) are most effective within 72 hours, but can be taken up to 120 hours (5 days) after unprotected sex. However, their efficacy decreases with time. The sooner they are taken, the better the prevention rate. Ulipristal acetate (Ella) and Copper IUDs are also used for emergency contraception and are effective within the 5-day window.
Explanation of each option:
· (a) 24 hrs – Effectiveness is highest if taken within this time, but the window for action is longer.
· (b) 48 hrs – Still effective, but does not represent the maximum allowed period.
· (c) 72 hrs – Common limit for Levonorgestrel-based pills, but some options work up to 120 hrs.
· (d) 120 hrs – Correct. Emergency contraceptives, including Copper IUDs and Ulipristal, can prevent pregnancy if taken within this time.