Which of the following methods is also known as the test-tube baby program?

Suggest some methods to assist infertile couples to have children.

The technique advised by a doctor to overcome the problem of infertility is:

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

$A$ 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?

Embryo with more than $16$ blastomeres formed due to in vitro fertilisation is transferred into