<prompt> Which one of the following is used for Severe male factor infertility?GIFTZIFTICSIIVF  <response>: C ICSI In cases of severe male factor infertility in which sperm count is low, a sperm cannot fertilize an egg, or the sperm has to be surgically retrieved, intracytoplasmic sperm injection ICSI is a highly effective solution. ICSI involves the insertion of a single sperm directly into a mature egg obtained from the ovary of a woman undergoing in-vitro fertilization IVF. Often, this procedure results in the fertilization and development of a normal embryo. If ICSI is combined with IVF to improve the sucess rates. GIFT gamete intrafallopian transfer and ZIFT zygote intrafallopian transfer are modified versions of in vitro fertilization IVF. 