Where do sperms get matured?

In $Cryptorchidism$,the testes fail to descend into the scrotum. What is the surgical procedure to bring the testes into the scrotum called?

The nutritive medium for the ejaculated sperms is provided by:

Match the structures/parts of the human male reproductive system in Column $I$ with their respective explanation in Column $II$ and select the correct answer from the given options.

Column $I$	Column $II$
$i$. Prepuce	$a$. Fibromuscular band that retains testis in scrotum.
$ii$. Penis	$b$. Primary male reproductive gonad.
$iii$. Testis	$c$. Loose fold of skin covering glans penis.
$iv$. Gubernaculum	$d$. Male copulatory organ.

During early and middle fetal life,the testes are located in the:

Name the condition in which the testes fail to descend from the abdominal cavity into the scrotum.