Mary Mallon was a cook and carrier of a disease which she spread for several years through the food she prepared. Identify the disease from the options given?

The correct option is A Typhoid
Typhoid, also known as enteric fever, is caused by Salmonella typhi bacteria that mainly spreads through contaminated food or water.
A famous case of typhoid is that of Mary mallon also known as Typhoid Mary. Mary was a cook by profession, infected with Salmonella and remained a carrier for the disease for several years and all the people she served food were affected with the disease.

Plague is a class of dangerous, life-threatening and infectious disease caused by the bacterium Yersinia pestis.

Cholera is a bacterial disease caused by the bacterium Vibrio cholerae. This disease is transmitted by contaminated food and water and found in places where there is a lack of proper sanitation.

Diphtheria is a disease caused by Corynebacterium diphtheriae. The disease can lead to difficulty in breathing, heart failure, paralysis and even death. It is usually transmitted through the respiratory droplets.