Concept:Air-borne diseases are infections transmitted through the air, usually by droplets, while cholera is a water-borne disease.
Explanation:Chicken pox spreads through respiratory droplets from an infected person.
Common cold is passed on when an infected person coughs or sneezes, releasing viruses into the air.
Whooping cough is also transmitted through airborne droplets from the respiratory tract.
Cholera, however, is caused by bacteria and spreads mainly through contaminated drinking water or food.
Since it does not spread through the air, cholera is the exception among the listed diseases.
Answer:B. Cholera