Question

Assertion (A): Cu-T, Cu-7 and LNG-20 are the most widely used copper-releasing IUDs.
Reason (R): Cu-ions in IUDs effectively suppress sperm motility and the fertilising capacity of sperms.

• A. Both (A) and (R) are true and (R) is the correct explanation of (A).
• B. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
• C. (A) is true, but (R) is false.
• D. (A) is false, but (R) is true.

Hint:

Copper IUDs work mainly by releasing ions that make the uterine environment hostile for sperms.

Answer 1

The Correct Option is A

Step 1: Cu-T, Cu-7, and LNG-20 are common IUDs — Assertion is true.
Step 2: Copper ions impair sperm motility and fertility — Reason is true.
Step 3: This mechanism directly explains the effectiveness of copper IUDs — so (A) is correct.