You are given an unknown organism to identify. It is unicellular and heterotrophic. It is motile, using many short extensions of the cytoplasm, each featuring the ring of 9 2 microtubule filament pattern. It has well-developed organelles and two nuclei, one large and one small. This organism is most likely to be a .A) radiolarians B) slime molds C) ciliates D) kinetoplastids E) foraminiferans

This organism is most likely to be a ciliates.

Explanation:

Ciliates are small unicellular protozoans that contain hair like ciliated projection, called cilia.

They contain 2 different types of nucleus, one is called diploid micro nuclei, that are responsible for carrying germ line of a cell and another one is poliploid macro nuclei that helps to control cell regulation and expression of phenotype of the organism.

Clilates are motile and contain one or more prominent contractile vacuole where they store the food.

The axoneme contain 9 ring like outer doublets and 2 centrally located singlet microtubules, (9+2 axoneme)