The correct option is C Malignant/Subertian
Plasmodium falciparum is a protozoan parasite, one of the species of Plasmodium, that causes malaria in humans. It is transmitted by female Anopheles mosquito. Plasmodium falciparum, the causative agent of malignant malaria, is among the most severe human infectious diseases.
So, the correct answer is option B.