Answer: D. Plants do not eat, so both chloroplasts and mitochondria are needed to make enough energy for plants to grow.  
Explanation: Option A is invalid since plant cells do use ATP. Option B is invalid since animal cells don't make their energy with chloroplasts. Option D is the most realistic one since chloroplasts in the plant are the ones that make the food for the plants, plant doesn't have a "mouth" so they depend on chloroplast to make food. 
 
        
                    
             
        
        
        
An organism that cannot make its own food is called a heterotroph. All animals and species of fungi, along with some types of bacteria, are heterotrophs.
 
        
             
        
        
        
Answer – Extrapolation
 
Extrapolation is the estimation of a value or quantity beyond
a known data range based on a trend in the data<span> (in other words, deducing
unknown values from trends in the known data). While extrapolating, one </span>would
usually estimate the unknown data with the presumption that
existing trends in the known data will continue or that a current method will
remain applicable.
 
        
             
        
        
        
The least reactive element in the third period is argon.
        
             
        
        
        
The answer would be, if I understand correctly, skeletal and smooth muscle tissue both help the body move, and give the body form. The skeletal structure give the body structure, and the muscles help the body move.