The correct option is C Multiload 375
Copper releasing IUDs :
Copper releasing IUDs are the intra-uterine devices which release copper ions into the uterus. Copper suppresses the motility of the sperms so that they cannot swim and reach the fallopian tube for fertilisation.
Copper ions also reduce the fertilising capacity of the sperms and increase phagocytosis of the sperms within the uterus.
Examples include CuT, Cu7, Multiload 375.
Multiload 375 :
Multiload 375 is a copper releasing IUD.
LNG-20 :
LNG-20 is a hormone-releasing IUD.
Saheli :
Saheli is a contraceptive pill.
Diaphragm :
A vaginal diaphragm is a barrier method of contraception which fits inside the vagina and physically blocks the sperm passing through the cervix
Final answer :
(a) Multiload 375