A woman uses a device X made of a common metal for preventing pregnancy. This device works by preventing the implantation of fertilised egg cell (or embryo) in the female organ Y.
(c) Can this method of contraception protect a woman from acquiring a STD?
No, the IUCD cannot protect a woman from acquiring a STD.
The semen enters the woman body while using an IUCD. Thus, pregnancy can be prevented but transmission of a STD may occur.