E. Coli - Full name Entamoeba coli, a commonly occurring bacterium in human intestine.
Felis tigris - The Indian tiger, well protected in the Gir forests.
Musca domestica - The common house lizards, a reptile.
Plasmodium falciparum - a protozoan pathogen causing the most serious type of malaria.
Plasmodium falciparum is a protozoan parasite, one of the most severe strains of Plasmodium that causes malaria in humans and mostly causes death. The Indian tiger is Panthera tigris. E. Coli, the full name is Escherichia coli. Musca domestica is the common house-fly. Thus, the correct answer is option D.