Soln:

Sexually transmitted bacterial infections such as syphilis caused by Treponema pallidum and Gonorrhoea caused by Neisseria gonorrhoeae.

HIV is the virus that causes AIDS, which is a sexually transmitted disease.

Hepatitis is a virus-caused liver inflammation that spreads through the person’s body fluids, blood, and other bodily fluids. Hepatitis spread through contaminated water and food.

So, the correct answer is (b) Hepatitis.