The correct option is D Norplant and Impalon
Implants are the type of contraceptives that are placed under the skin of the upper arm. They are matchstick sized rods of plastic or other inert material containing a form of progesterone called etonogestrel. Norplant is one of the most reliable implants, it is a very cost-effective and low maintenance method, lasts for a maximum of 5 years and it is reversible in nature. Impalon is a single rod-like device implanted through a needle.
Mala-D is oral contraceptive pill that contains a combination of progestogens and estrogen. Pills help in contraception by inhibiting ovulation and implantation of embryo.
Diaphragm and Vaults are a non-medicated barrier methods, which fit in the cervix of the female and prevent the passing of sperms through the cervix.
Condom is a tubular latex sheath that fits over the penis and traps the ejaculated sperms during coitus.