Consider the Following Data

Consider the following data:
∙ Most ancient eukaryotes are unicellular.
∙ All eukaryotes alive today have a nucleus and cytoskeleton.
∙ Most ancient eukaryotes lack a cell wall.
Which of the following conclusions about the first eukaryotes is most consistent with the data presented?

A) They were very similar to a plant cell.
B) They were anaerobic.
C) They were capable of phagocytosis.
D) They were photosynthetic.