Correct option is D
Cholera is a waterborne disease caused by the bacterium Vibrio cholerae. It spreads through the ingestion of contaminated water or food and primarily affects the small intestine. Cholera is characterized by severe diarrhea, dehydration, and, in extreme cases, can be fatal if not treated promptly.
Explanation of Options:
Tuberculosis: Incorrect, as it is a respiratory disease caused by
Mycobacterium tuberculosis and spreads through airborne transmission.
Smallpox: Incorrect, as it is a viral disease caused by the variola virus and spreads through direct contact.
Anthrax: Incorrect, as it is caused by
Bacillus anthracis and primarily spreads through contact with infected animals or their products.
Cholera: Correct, as it is a classic example of a waterborne disease.
