The correct option is
C Flagellate
Based on the locomotory structures the protozoans are classified as follows-
- Flagellates : 1-2 flagella
- Ciliates: hair-like cilia
- Sarcodines: pseudopodia
- Sporozoan: lack locomotory structures
Euglena is an unicellular protozoan with two flagella arising from the basal bodies located at the front of the cell; one of them is too short and does not protrude out of the cell, while the other is relatively long and can be viewed under a light microscope. The correct answer is- 'Flagellate'.