The correct answer is option (4) because • Multiload 375 is a copper releasing IUD which suppresses sperm motility and fertilizing capacity of sperms. • Lippes loop is a non-medicated intra uterine device. • Vaults are barrier type of contraceptives which prevent physical meeting of ovum and sperms. • LNG-20 is a hormone releasing IUD that makes the uterus unsuitable for implantation and the cervix hostile to the sperms. Hence the correct matches are A. Copper releasing IUD - Multiload 375 B. Non-medicated IUD - Lippes loop C. Contraceptive barrier - Vaults D. Hormone releasing IUD - LNG-20