The condition in which sperm motility is significantly reduced is known as:

Infertility is believed to be due to the lack of which vitamin?

$IVF$ in which the early zygote with up to $A$ blastomeres is transferred to the Fallopian tube is called $B$.

In which process is sperm directly introduced into the ovum?

What are the potential drawbacks in adoption of the $\text{IVF}$ method?
$A.$ High fatality risk to mother
$B.$ Expensive instruments and reagents
$C.$ Husband/wife necessary for being donors
$D.$ Less adoption of orphans
$E.$ Not available in India
$F.$ Possibility that the early embryo does not survive
Choose the correct answer from the options given below:

What are the Assisted Reproductive Techniques $(ART)$ practiced to help infertile couples? Describe any three techniques.