The correct option is D Gamete intrafallopian transfer
A childless (infertile) couple can be assisted to have a child through a set of medical procedures which are specifically aimed at treating infertility, known as Assisted Reproductive Technology (ART). One of those techniques is called GIFT. It stands for gamete intrafallopian transfer. In this technique, gametes (both sperm and ova) are transferred artificially into the fallopian tube of the female. Fertilisation takes place in the ampullary region of the fallopian tube (inside the body of the female- in vivo), hence it is an in vivo technique. IT is done for people who want the conception or fertilisation to take place in the female body and not in a Petri dish.