Cholera is a disease that is caused by the ingestion of food or water contaminated with the bacterium Vibrio cholerae. It is a highly infectious disease that primarily affects the intestines, leading to severe diarrhea and dehydration. The correct statement regarding cholera is option 'C', which states that cholera is a disease due to consumption of contaminated food or water.

Let us discuss this in more detail:

1. Cholera is not a disease that causes loss of memory:
- Cholera primarily affects the gastrointestinal system and does not directly impact memory or cognitive functions.
- The symptoms of cholera include profuse watery diarrhea, vomiting, and leg cramps, but memory loss is not a characteristic feature.

2. Cholera is not a disease of muscles due to consumption of alcohol:
- Cholera is caused by the ingestion of contaminated food or water, specifically through the consumption of food or water contaminated with the bacterium Vibrio cholerae.
- Consumption of alcohol does not directly cause cholera or lead to muscle-related symptoms associated with the disease.

3. Cholera is a disease due to consumption of contaminated food or water:
- Cholera is primarily transmitted through the fecal-oral route, meaning that the bacterium is present in the feces of infected individuals and can contaminate water sources or food.
- When contaminated water or food is consumed, the bacteria enter the small intestine and release toxins that cause excessive fluid secretion, resulting in severe diarrhea and dehydration.
- Contaminated water sources, such as inadequate sanitation systems or improper sewage disposal, are common factors contributing to cholera outbreaks.

4. Cholera is not a genetic disease:
- Cholera is an infectious disease caused by a bacterium and is not inherited or caused by genetic factors.
- It spreads through the ingestion of contaminated food or water and can affect individuals of any genetic background.

In conclusion, the correct statement regarding cholera is that it is a disease due to consumption of contaminated food or water. Cholera is caused by the bacterium Vibrio cholerae and primarily affects the gastrointestinal system, leading to severe diarrhea and dehydration. It is important to ensure access to clean and safe water sources and practice proper hygiene and sanitation to prevent the spread of cholera.