Difference between $ZIFT$ and $IUT$ lies in the

$A$ childless couple visits an Assisted Reproductive Technologies (ARTs) centre to get assistance to have a child. On diagnosis,it was noticed that there was a low sperm count in the male partner. Which of the following strategies of $ART$ is most suitable in this case?

$GIFT$ is

The latest technique to produce a child is $GIFT$. The full form is

In $\text{GIFT}$ $(\text{Gamete Intrafallopian Transfer})$,the fusion of egg and sperm occurs in the $......$

The method of directly injecting a sperm into an ovum is called: