The correct option is
C Transfer of a mixture of sperms and ova into the fallopian tube
GIFT (gamete intra fallopian transfer) is an assisted reproductive procedure which involves removing a woman’s eggs, mixing them with sperm, and immediately placing them into a fallopian tube. One of the main differences between this procedure and in vitro fertilization (IVF) and zygote intrafallopian transfer (ZIFT) procedures is that with GIFT the fertilization process takes place inside the fallopian tube rather than in a laboratory.
So, the correct answer is 'Transfer of a mixture of sperms and ova into the fallopian tube'.