solve the question with explaination

Non medicated intra uterine devices-  Those devices which either retard the sperm motility or have the spermicidal effect are known as non medicated intra uterine devices. It includes lippes loop, plastic coils etc

Hormone releasing intra uterine devices- Those devices which release certain hormones  that alter the hormonal balance in the female body and prevent the conception are known as medicated intra uterine devices. For example- Progestasert, LNG-20.

Copper releasing intrauterine devices function by releasing copper ions which can most effectively suppress sperm motility and the fertilising capacity of sperms. ​For example, Copper T is a simple copper releasing intra-uterine device (IUD) made of a flexible, "T" shaped piece of plastic wrapped with a thin copper containing wire. It consists of a flexible cross arm, a vertical arm and two threads or strings. The copper wire is wound on the two arms that releases copper ions which can most effectively suppress sperm motility and the fertilising capacity of sperms. In this way, it prevents pregnancy. Other examples include multiload 375  and Cu7.

Hence, the correct option is (2).