<prompt> Black water fever is a special manifestation of malaria caused by;P. falciparumP. malariaeP. ovaleP. vivax  <response>: Ans. A. P. falciparumBlackwater fever BWF is a severe clinical syndrome, characterized by intravascular hemolysis, hemoglobinuria with passage of black urine, and acute renal failure caused by a variety of factors in patients with P. falciparum infestation. 