The answer is
letter A.
Zooflagellata is a phylum within the kindom
Protista. They are a unicellular organism with two long
flagella that may form symbiotic, commensal, or parasitic relationships with
humans, animals, and certain types of plants. They can also be found
free-living and they have the capacity to assimilate organic material through
the process of osmotrophy (absorption through the plasma membrane) or
phagotrophy (engulfing prey in food vacuoles). This explains why it is found in
the blood smear of the person being observed by the technician.
