Which of the following is currently the most frequently accepted method of contraception in India?

The use of intrauterine devices is a popular and effective technique of contraception (IUDs). These devices are implanted into the uterus through the vagina by doctors or experienced nurses. The non-medicated IUDs (e.g., Lippes loop), copper-releasing IUDs (CuT, Cu7, Multiload 375), and hormone-releasing IUDs are currently available (Progestasert, LNG-20). IUDs promote sperm phagocytosis within the uterus, and the Cu ions released reduce sperm motility and fertility.