Correct Answer - A
Infection of Ascaris occurs in a healthy person due to the contaminated water, vegetables, (raw or uncooked) fruits, etc. Mosquitos bite causes malaria due to the entry to Plasmodium parasite into the blood by mosquito. Eating imperfectly cooked pork causes trichinosis disease (parasitic disease). Tse-tse fly causes trypanosomiasis, an infection of the central nervous system.
