the lysosome of an engulfed prokaryotic cell the chloroplast of an engulfed prokaryotic cell the cell membrane of an eukaryotic host cell the chloroplast of an eukaryotic host cell
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: According to the endosymbiotic theory, the outer membrane of the chloroplast originated from which organelle?
Possibilities:
- the lysosome of an engulfed prokaryotic cell
- the chloroplast of an engulfed prokaryotic cell
- the cell membrane of an eukaryotic host cell
- the chloroplast of an eukaryotic host cell

the cell membrane of an eukaryotic host cell