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

Which of the following are all sexually transmitted diseases?

Syphilis is an infectious bacterial disease caused by $Treponema\ pallidum$ with $3$ stages:
$(A)$ Infectious painless ulcers on the genitals $\quad(i)$ First
$(B)$ Blindness, heart trouble, aortic impairment $\quad(ii)$ Second
$(C)$ Skin lesions, hair loss, swollen joints $\quad(iii)$ Third
Which of the following is the correct match between the symptoms and stage?

$STDs$ (Sexually Transmitted Diseases) can lead to several long-term complications. Which of the following are considered later complications of $STDs$?
$I$. Pelvic inflammatory disease
$II$. Abortion
$III$. Stillbirth
$IV$. Ectopic pregnancies
$V$. Infertility
$VI$. Cancer
Choose the correct combination:

Which of the following is not a sexually transmitted disease?

Which of the following is not an example of a sexually transmitted disease $(STD)$?