Option B is the correct answer
        
                    
             
        
        
        
Because you have to have fossil to make the evolution and it will make it better
        
             
        
        
        
Cells Can Replicate Their DNA Precisely. Replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. DNA replication is one of the most basic processes that occurs within a cell.
 
        
                    
             
        
        
        
Answer:
The evolution of the Eukaryote cell is most likely involves the endosymbiosis of an smaller bacteria that might be aerobic bacteria by a larger bacteria.  
Then this smaller bacteria must remain in symbiotic association with the larger bacteria and it must evolve in organelles like chloroplast or mitochondria and the larger prokaryotic cell must be evolved in an Eukaryota cell.
This theory is called endosymbiotic theory and is supported by the similarities of organelle like chloroplast and mitochondria present in eukaryotic cells with prokaryotic cells.