A) Iron
B) Zinc
C) Copper
D) Ammonium
Correct Answer: C
Solution :
[c] Copper ions play an important and effective role in the activity of IUDs. Copper IUDs primarily work by disrupting sperm mobility and damaging sperm so that they are prevented to take part in the process of fertilisation. The increased copper ions in the cervical mucus inhibit the sperm's motility and viability, preventing sperm from traveling through the cervical mucus or destroying it as passes through.
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