The pathogenic protozoan species that belongs to class apicomplexa is

Explanation

Apicomplexa is a large class of parasitic protozoans, many of which are pathogenic to humans and animals. Members of this class have a complex life cycle and are known for having an apical complex structure that aids in penetrating host cells. Plasmodium species, which cause malaria, are well-known members of the Apicomplexa class. Other options like Entamoeba and Trypanosoma belong to different groups and are not classified under Apicomplexa. Paramecium is a ciliate and does not belong to this class.