Which of the following cannot be detected in a developing foetus by amniocentesis?

What does the given figure represent?

Sex determination using Barr bodies is possible through which of the following methods?

Match the following columns:

Column-$I$	Column-$II$
$P$. Vasectomy	$I$. Natural method
$Q$. Condom	$II$. Sterilization
$R$. Multiload $375$	$III$. Barrier method
$S$. Periodic abstinence	$IV$. Intrauterine device $(IUD)$

Consider the statements given below regarding contraception and answer as directed thereafter:
$(1)$ Medical termination of pregnancy $(MTP)$ during the first trimester is generally safe.
$(2)$ Generally,chances of conception are nil until the mother breastfeeds the infant up to two years.
$(3)$ Intrauterine devices like copper $T$ are effective contraceptives.
$(4)$ Contraception pills may be taken up to one week after coitus to prevent conception.
Which two of the above statements are correct?

Which of the following can cause abortion in females?