Mitochondria and chloroplasts arise from preexisting mitochondria and chloroplasts. Mitochondria and chloroplasts arise from preexisting endomembrane systems. Mitochondria and chloroplasts are synthesized in the nucleus. Mitochondria and chloroplasts are synthesized in ribosomes.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which concept supports the endosymbiotic origin of complex, eukaryotic double-membrane structures?
Possibilities:
- Mitochondria and chloroplasts arise from preexisting mitochondria and chloroplasts.
- Mitochondria and chloroplasts arise from preexisting endomembrane systems.
- Mitochondria and chloroplasts are synthesized in the nucleus.
- Mitochondria and chloroplasts are synthesized in ribosomes.

Mitochondria and chloroplasts arise from preexisting mitochondria and chloroplasts.