The function of copper ions in copper releasing IUD’s is
(a) they suppress sperm motility and fertilising capacity of sperms
(b) they inhibit gametogenesis
(c) they make uterus unsuitable for implantation
(d) they inhibit ovulation
(a) An intrauterine device is a small, often T-shaped birth control device that is inserted into a woman's uterus to prevent pregnancy. The copper releasing IUD's primarily work by disrupting sperm motility and damaging sperm. Copper acts as a spermicide. It can also alter the endometrial lining, preventing implantation.