Final answer:
An organism with an apicomplex is called a sporozoan. They are parasitic protists that have a unique apical complex for infecting host cells. They have complex life cycles often requiring multiple hosts.
Step-by-step explanation:
An organism with an apicomplex is referred to as a sporozoan. In other words, the correct answer to your question is E. A sporozoan. Apicomplexans are a group of protist parasites, characterized by a unique structure called an apical complex which helps in infection of host cells. Predominantly, all apicomplexans are parasitic. Their complex life cycles often involve multiple stages of sexual and asexual reproduction and require multiple hosts, many can infect a variety of animal cells. An illustrative member of this group would be the dangerous Plasmodium genus which causes malaria in humans.
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