Answer:
my guess is C
Explanation:
All you have to do is eliminate the ones that don't make sense and c is the only one left
 
        
             
        
        
        
Groundwater is the largest available source of freshwater, followed by lakes, rivers, reservoirs and wetlands. Groundwater refers to all subsurface water.
        
                    
             
        
        
        
Answer:
1. A. carbon,hydrogen,nitorgen and oxygen
2.C. Nucleotides
3.A.Brain
4.D. Polysaccharide
5. B.Amino acids contain nitrogen; fatty acids and sugars do not.