The correct option is A Zygote
ZIFT involves the transfer of zygote. ZIFT is similar to invitro fertilization (IVF), where a complex series of procedures used to treat fertility or genetic problems and assist with the conception of a child is used. During ZIFT, mature eggs are collected (retrieved) from the ovaries and fertilized by sperm in a lab and the zygote formed is transferred into the fallopian tube within 24 hours for descend and implantation in the uterus.