Diseases spread through different modes of transmission. Some are airborne, while others spread through water, food, or contact.
Analysis of Options:
(A) Measles: Caused by virus. Spreads through air via respiratory droplets from coughs/sneezes. Airborne disease.
(B) Cholera: Caused by bacterium Vibrio cholerae. Spreads through contaminated water or food (fecal-oral route). Does NOT spread through air. This is the correct answer.
(C) Cold: Caused by various viruses. Spreads through air via droplets and also through contaminated surfaces. Airborne disease.
(D) Tuberculosis: Caused by bacterium Mycobacterium tuberculosis. Spreads through air when infected person coughs or sneezes. Airborne disease.
Conclusion: Cholera is waterborne, not airborne. Final Answer: (B) Cholera
