Respuesta :

JoshMDay
Considering your talking about the a-d options Here is my answer
A) Both produce proteins.
B) Both contain mitochondria.
C) Both provide structure to cells.
D) Both perform photosynthesis.

Answer is D
DeleteME
Researchers were led to propose that chloroplasts evolved from cyanobacteria because they observed that both of them perform photosynthesis. 

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