Test tube baby programme involves

A number of special ART techniques which assist infertile couples to have children. Some prominent techniques are:

1. Test tube baby programme (IVF-ET)

2. Gamete intra fallopian transfer( GIFT).

3. Intra cytoplasmic sperm injection(ICSI).

4. Artificial insemination technique(AIT).

Test tube baby: Ovum from donor female and sperm from donor male are fertilized in laboratory. The zygote or early embryo(upto 8 blastomeres stage) then transferred to fallopian tube called zygote intra fallopian transfer or ZIFT.
So, the correct answer is 'Zygote intrafallopian transfer'.