Answer:
Apicomplexan.
Explanation:
Apicomplexan belongs to the large phylum of the parasitic alveolates. The apicoplast is a type of plastid present in the apicomplexans.
Apicomplexans are unicellular but not photosynthetic algae as they depends on the host organism for their food. They belong to the phylum apicomplexa. Cilia and flagella are absent in these group of organisms.
Thus, the correct answer is option (A).
