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

$ICSI$ stands for:

Match the Assisted Reproductive Technologies $(ART)$ in Column $I$ with their respective processes in Column $II$ and select the correct option:

Column $I$	Column $II$
$a$. $ZIFT$	$i$. Single sperm cell is injected directly into the cytoplasm of an ovum
$b$. $GIFT$	$ii$. Fertilized egg is transferred to the fallopian tube for further development
$c$. $ICSI$	$iii$. Sperms are introduced into the uterus
$d$. $IUI$	$iv$. Ova and sperms are directly injected into regions of the oviduct where fertilization occurs

Which of the following is the most appropriate statement defining infertility?

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

$A$ surrogate mother is: