STDs are reported to be very high among persons in the age group of ..... years.

All reproductive tract infections $(RTIs)$ are $STDs$,but all $STDs$ are not $RTIs$. Justify with an example.

$A$ : 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.

Select the correct option for the early symptoms of Sexually Transmitted Diseases (STDs).
$I -$ Itching in the genital area
$II -$ Abortion
$III -$ Fluid discharge in the genital area
$IV -$ Pelvic Inflammatory Diseases $(PID)$
$V -$ Slight pain in the genital area
$VI -$ Swelling in the genital area

Which of the following principles should be followed to stay free from Sexually Transmitted Infections $(STIs)$?

From the sexually transmitted diseases mentioned below,identify the one which does not specifically affect the sex organs.