Which Is an Observation That Supports the Theory of Endosymbiosis

Multiple Choice

Which is an observation that supports the theory of endosymbiosis?

A) Chloroplasts carry out photosynthesis.
B) Chloroplasts divide independently of the nucleus.
C) Mitochondria are present in large numbers in some cells.
D) Mitochondria are found in both plant and animal cells.
E) Plastids are organelles found only in plant cells.