In the given choices, letter a. hearing is the one that is most likely to relate in balance. Why ? because our sense of hearing is composed of our ears that resides on both sides of our head. It needs balance to be able to hear  both sides at the same time.
        
             
        
        
        
Answer: Mutation
Explanation:
DNA is a dynamic and adaptable molecule. As such, the nucleotide sequences found within it are subject to change as the result of a phenomenon called mutation. Depending on how a particular mutation modifies an organism's genetic makeup, it can prove harmless, helpful, or even hurtful. Sometimes, a mutation may even cause dramatic changes in the physiology of an affected organism. Of course, in order to better understand the varying effects of mutations, it is first necessary to understand what mutations are and how they occur.
 
        
             
        
        
        
The W-4 is a tax form that you complete and give to your employer (not the IRS) for federal tax (and some state tax) withholding. It tells your employer how much federal and/or state tax you wish to have withheld from each paycheck in a pay period. Your W-4 affects how big a refund you will get, or how much tax you will owe, when you file a tax return on Tax Day. 
 
        
                    
             
        
        
        
The correct answer is:  [A]:  "house knowledge" . 
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Specifically, "<em><u>oikos</u></em>" means: "house" ; and "<em><u>logia</u></em>" means "knowledge" .
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Answer:
Respiratory system
Explanation:
Like other fishes, sharks extract oxygen from water as it passes over their gills.