Which of the following diseases is caused by a virus?

The correct option is D

Influenza

Correct answer is option D) Influenza

Explanation of correct option:

1. Influenza is a communicable disease caused by a virus that infects the nose, throat and lungs.
2. Influenza is commonly called the flu.

Explanation of incorrect option:

Option A)

1. Cholera (Caused by: Vibrio cholerae) is a bacterial disease spread by the means of contaminated water.

Option B)

1. Typhoid (Caused by: Salmonella typhi) is a bacterial disease spread by contaminated food and water.

Option C)

1. Tuberculosis (Caused by: Mycobacterium tuberculosis) is a bacterial disease that spreads through infected droplets released into the air from a diseased person.

Final answer: Influenza is caused by virus.