B.) A dog walks to a stream and drinks when it gets thirsty  
would have to be your answer..
        
             
        
        
        
NADPH is the reduced form of NADP+. This simply means that NADPH has an extra hydrogen ion.
NADPH is formed when upon the reduction of NADP+ . NADP stands for nicotine amide dinucleotide phosphate. It is a coenzyme that is involved in a wide range of anabolic reactions.
During the synthesis of carbohydrates in plants, NADPH acts as a reducing agent, likewise in the synthesis of nucleic acids and lipids.
As a reduced compound, NADPH becomes a molecule with high energy thus being especially useful in driving the Calvin cycle.
        
             
        
        
        
Answer:
The second one. 
Explanation:
Purpose, hypothesis, procedure, data, analysis, and conclusion.