To determine which group of diseases is caused by polluted water, we can examine the characteristics and causative agents of each disease listed in the given options. Polluted water is a significant source of various infections primarily due to the presence of pathogens like bacteria and viruses. Here’s a breakdown of each group of diseases provided in the options:

1. Cholera - Caused by the bacterium Vibrio cholerae, it is spread by contaminated drinking water and can lead to severe diarrhea and dehydration.
2. Acute Diarrhoea - Often caused by consuming contaminated food or water, diarrhea can be due to various bacteria, viruses, or parasites.
3. Typhoid - This bacterial infection, caused by Salmonella typhi, is transmitted through contaminated food or water.
4. Polio - Poliovirus, responsible for polio, spreads through water contaminated with human feces.
5. Enteritis - An inflammation of the intestine often caused by pathogens in contaminated food or water.
6. Tuberculosis - Primarily a respiratory disease caused by Mycobacterium tuberculosis. It is not commonly waterborne; rather, it spreads through airborne particles.

Based on this analysis, let's evaluate the options:

• Option 1: Cholera, Acute Diarrhoea, Typhoid, and Polio - All of these diseases are known to be transmitted through polluted or contaminated water, making this group the correct answer.
• Option 2: Cholera, Typhoid, Enteritis, and Tuberculosis - While cholera, typhoid, and enteritis can be waterborne, tuberculosis is not.
• Option 3: Typhoid, Enteritis, and Tuberculosis - Typhoid and enteritis can be waterborne, but tuberculosis is not linked to water pollution.
• Option 4: Cholera, Acute Diarrhoea, Typhoid, and Tuberculosis - Similarly, tuberculosis is misplaced here, as it is not waterborne.

Conclusion: The correct group of diseases caused by polluted water is Cholera, Acute Diarrhoea, Typhoid, and Polio, which corresponds to Option 1.