Progestasert and LNG-20 are examples of:

The correct answer is Option (2) → Hormone releasing IUDs

Option (1) Copper releasing IUDs — Incorrect. CuT, Cu7 and Multiload 375 are copper releasing IUDs. The Cu ions they release suppress sperm motility and the fertilising capacity of sperms.

Option (2) Hormone releasing IUDs — Correct. Progestasert and LNG-20 release hormones inside the uterus. These hormones make the uterus unsuitable for implantation and the cervix hostile to the sperms.

Option (3) Contraceptive pills — Incorrect. Pills are taken by mouth in small doses of progestogens or progestogen-estrogen combinations. They are not placed in the uterus.

Option (4) Non-medicated IUDs — Incorrect. A non-medicated IUD, such as the Lippes loop, releases nothing. It works only by being present in the uterus.

Note: A similar question was also asked in CUET (UG) 2023 on 27-05-2023 (Slot 3).

NCERT Extract:
Population Stabilisation and Birth Control – “… Another effective and popular method is the use of Intra Uterine Devices (IUDs). These devices are inserted by doctors or expert nurses in the uterus through vagina. These Intra Uterine Devices are presently available as the non-medicated IUDs (e.g., Lippes loop), copper releasing IUDs (CuT, Cu7, Multiload 375) and the hormone releasing IUDs (Progestasert, LNG-20) (Figure 3.2).”