Example of sexually transmitted disease is –

Question

Accepted Answer

Explanation:

1. **Option 3: Gonorrhoea**  
   Gonorrhoea is a sexually transmitted disease (STD) caused by the bacterium *Neisseria gonorrhoeae*. It is transmitted through sexual contact with an infected person, affecting both men and women. Gonorrhoea can infect the genitals, rectum, and throat, and is particularly common among young people aged 15-24. Symptoms may include painful urination, abnormal discharge from the genitals, and in women, it can lead to pelvic inflammatory disease if left untreated. The fact that gonorrhoea is transmitted through sexual contact categorically classifies it as a sexually transmitted disease, making Option 3 the correct answer.

2. **Option 1: T.B. (Tuberculosis)**  
   Tuberculosis is an infectious disease caused by the bacterium *Mycobacterium tuberculosis*. It primarily affects the lungs but can also impact other parts of the body. T.B. is spread through the air when an infected person coughs or sneezes, not through sexual contact. Therefore, it is not classified as a sexually transmitted disease, making Option 1 incorrect.

3. **Option 2: Cancer**  
   Cancer is a broad term for a group of diseases characterized by the uncontrolled growth and spread of abnormal cells. It can affect various parts of the body and is caused by genetic mutations, environmental factors, and lifestyle choices. Cancer is not transmitted from person to person through sexual contact, so it is not considered a sexually transmitted disease. Thus, Option 2 is incorrect.

4. **Option 4: Pneumonia**  
   Pneumonia is an infection that inflames the air sacs in one or both lungs, which can be caused by bacteria, viruses, or fungi. It is typically spread through airborne droplets from a cough or sneeze, not through sexual contact. As pneumonia is not transmitted sexually, it is not classified as a sexually transmitted disease, making Option 4 incorrect.

In conclusion, the only option that correctly identifies a sexually transmitted disease is Option 3: Gonorrhoea.