Disease Classification: Malaria Malaria is a protozoal disease transmitted by infected Anopheles mosquitoes. It is caused by the Plasmodium protozoan parasite. Option Analysis - (A) Fungal: Incorrect. Malaria is not caused by fungi. - (B) Protozoal: Correct. Malaria is caused by Plasmodium, a protozoan. - (C) Viral: Incorrect. Malaria is not a viral disease. - (D) Bacterial: Incorrect. Malaria is not a bacterial disease. Conclusion Option (B) is correct because malaria is a protozoal disease.