Which of the following diseases is caused by a virus?
Polio
The correct option is option A.
Explanation of correct option:
Explanation of incorrect options:
Option B:
Typhoid is caused by the bacterium Salmonella typhi.
Option C:
Malaria is spread by the infection of the parasite named Plasmodium and is spread by the bite of female anopheles mosquitoes.
Option D:
Mycobacterium tuberculae causes the disease tuberculosis.
Final answer: Polio is caused by a virus.