Which of the following best describes the main idea of the endosymbiotic theory?

Question

anonymous · Answer

A.Modern day mitochondria evolved from simple prokaryotic cells taken up by larger prokaryotes. 

B.Large prokaryotes ingested smaller eukaryotes that became modern-day chloroplasts. 

C.Eukaryotic cells evolved from primitive mitochondria that engulfed ancient prokaryotes. 

D.Ancient photosynthetic prokaryotic organisms evolved into modern ribosomes.

anonymous · Answer

I think its A...

camerondoherty · Answer

does this help probs not https://answers.yahoo.com/question/index?qid=20081008173511AAtefLY

anonymous · Answer

yea.. I saw that one too, its what made me think it was A..