Which one of the following diseases is caused by protozoans

Which one of the following diseases is caused by protozoans?

  1. Malaria
  2. Influenza
  3. AIDS
  4. Cholera

Answer

Malaria is caused by a protozoan Plasmodium.

Influenza is caused by RNA virus, AIDS is caused by HIV and cholera is caused by bacterium Vibrio cholerae.

The correct option is A.