Which contraceptive device makes uterus unsuitable for implantation?
The second group among the intra uterine devices (IUD) called Hormonal or Hormone releasing IUDs inhibit ovulation, make cervix unreceptive to sperms amd make the uterus unsuitable for implantation. Examples of hormone releasing IUDs are progestasert & LNG-20.
So, the correct answer is 'Progestasert'.