Transfer of an ovum of a donor into fallopian tube of a surrogate mor is

A. IVF- In vitro fertilization is a method in which fertilization of male gamete (spermatozoon) and female gamete (ovum) outside the body in almost similar conditions as that in the body followed by zygote or embryo transfer(ET).

B. IUT- The embryo with more than 8 blastomeres is transferred into the uterus.

C. GIFT- In this, ovum from the donor female is surgically removed and is then introduced into the fallopian tube of  females.

D. ZIFT- The zygote or early embryo (upto 8 blastomeres stage) is transferred to fallopian tube called zygote intra fallopian transfer or ZIFT.

So, the correct answer is 'GIFT'.