Plants store their sugar in the form of starch
        
             
        
        
        
It’s B the other person put D but that’s the cell wall or cell membrane 
HOPE THIS HELPS !
        
             
        
        
        
Absorbing prokaryotic cells. This theory is called the endosymbiotic theory.
The early prokaryotic cells that were absorbed likely evolved into mitochondria and chloroplasts, membrane-bound organelles with their own DNA in single chromosomes and their own ribosomes.