I think the answer would be B. Genealogy. 
 
        
                    
             
        
        
        
Answer:
Element is a substance that cannot be broken down into simpler substances. Atoms are the smallest particle of an element. An element has a fixed composition because it contains only one type of atom.
 
        
             
        
        
        
Meiosis is when two parent cells give birth to two sister cells.
The cell that is created is a sister cell.
-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-
Hope this helped you.
-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-'-
···· CatalHoyuk ····
 
        
             
        
        
        
The best answer is C.
Chloroplasts are not found in all eukaryotic cells but only in plant cells. Animal cells are eukaryotic in nature but animals do not have chloroplasts in their cells because they do not engage in photosynthesis. 
Photosynthesis is the process by which plants make their own food. Chloroplasts  contain chlorophyll which is essential in t trapping sunlight from which supplies the energy for photosynthesis. 
Animals do not make their own food like plants but eat ready made food so their cells  lack mechanisms for food manufacture.