In birth control methods,which one is an intra-uterine device?

What is the full form of $CDRI$?

Which of the following is a hormone-releasing $IUD$?

The method of natural contraception which requires correct knowledge of the menstrual cycle is

In lactational amenorrhoea,there is no ovulation or menstruation during the period of intense lactation following parturition,due to high levels of prolactin,which:

How do injectable contraceptives ($DMPA$ - Depot Medroxyprogesterone Acetate) prevent ovulation?