The test for 'syphilis' was developed by

Match the following sexually transmitted diseases (column $I$) with their causative agent (column $II$) and select the correct option.

Column-$I$	Column-$II$
$A$. Gonorrhoea	$i$. $HIV$
$B$. Syphilis	$ii$. Neisseria
$C$. Genital warts	$iii$. Treponema
$D$. $AIDS$	$iv$. Human papilloma virus

Give scientific reasons: Explain the statement - 'Precaution is needed for safety' in the context of reproductive health.

Venereal diseases (Sexually Transmitted Infections) can spread through:
$(a)$ Using sterile needles
$(b)$ Transfusion of blood from an infected person
$(c)$ Infected mother to foetus
$(d)$ Kissing
$(e)$ Inheritance
Choose the correct answer from the options given below.

$A$ : Diseases or infections which are transmitted through sexual intercourse are collectively called sexually transmitted diseases $(STDs)$.
$R$ : $STDs$,if not properly treated,may lead to pelvic inflammatory diseases,abortion,stillbirth,ectopic pregnancies,infertility,or even cancer of the reproductive tract.

$STDs$ are a threat to reproductive health. Describe any two such diseases and suggest preventive measures.