The correct option is D ZIFT
For developing a test-tube baby, fertlisation of the male and female gametes are carried out in-vitro in the laboratary. Zygote or early embryos are then transferred to the fallopian tube of the mother. This process is called Zygote Intra Fallopian Transfer (ZIFT). If the embryo is transferred into the uterus, the procedure is called Intra Uterine Transfer (IUT).
ICSI - Intra Cytoplasmic Sperm Injection: Sperm is injected into the cytoplasm of the egg.
IUI - Intra Uterine Insemination: Sperm is injected into the uterus of the female
GIFT - Gamete Intra fallopian Transfer: Transfer of gametes (sperm) into fallopian tube.