The disease caused by a protozoan and spread by an insect is

The disease caused by a protozoan and spread by an insect is

  1. dengue
  2. malaria
  3. polio
  4. measles

Answer

Malaria is the disease which is caused by the spread of a protozoan - Plasmodium.

It is spread in healthy individuals by the bite of a female Anopheles mosquito carrying this Plasmodium in their mouth (saliva).

The correct option is B.