The correct answer is A. 
Animal cells do not have a  cell wall.
A cell wall is the rigid, outermost covering of plant cells and is made up of cellulose.  It is absent in animal cells. The cell wall is visible under a light microscope.
Animal cells are instead covered by a cell membrane. It is made up of lipids, proteins, and small amounts carbohydrates. It is a thin and delicate structure  that can only be seen using an electron microscope.
 
        
                    
             
        
        
        
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Step by steps explanation
        
             
        
        
        
Answer:
DNA is not neccessarly produced, but is copied from when a parent cell divides into two daughter cells
Explanation:
If you mean where the DNA is stored, it is stored in the nucleus
 
        
             
        
        
        
<span>B. Knowledge and valuable resources are shared among scientists.
Being involved in a research community could provide a higher chance to researchers the privilege to avail resources, knowledge and supporting evidences that might relate or support the current study the research wants to delve into.</span>