The position of the diver is described as "below a certain point"; therefore, the reference point must be above the diver. For a diver in the middle of his dive, the bottom of the pool, the other swimmers and the far side of the swimming pool are likely to be below the diver, or at level with the diver at most. Out of the options, the only point of reference that is likely to be above the diver is B. the diving board. 
        
             
        
        
        
A camel's hump is an example of structural adaption.
        
                    
             
        
        
        
Answer: dietary fiber
Explanation:
The dietary fibers can be defined as those nutrients in the diet which cannot be digested by the gastrointestinal enzymes and the minerals from them are not absorbed by the body. These keep the bowel full after food intake for long. These prevent disease like diabetes as reduces the need for consumption of more food, heart disease and constipation. The fruits, vegetable, legumes, fibers are the sources of dietary fibers.