Correct option (a) Progestasert
Explanation :
All the options are examples of intra-uterine contraceptive devices (IUCDs). These are plastic or metal objects which are inserted by doctors in the uterus through vagina. Lippe's loop is non-medicated IUCD. CuT and Multiload are copper releasing lUCDs, which suppress motility and fertilizing capacity of sperms. Progestasert is a hormone releasing IUCD which makes the uterus unsuitable for implantation and cervix hostile to the sperms.
