Your best bet is most likely going to be B
A Chromosome holds part or all of the genetic material of an organism. It also  includes packaging proteins which, aided by chaperone proteins, bind to and condense the DNA molecule to prevent it from becoming an unmanageable tangle.
So yes your best bet is B.
 
        
             
        
        
        
Answer:
Some arid climates have very very little rainfall but not none.
Explanation:
 
        
             
        
        
        
Everything in the universe was created when the Big Bang occurred and the universe is expanding
        
             
        
        
        
Answer:
Parasitism describes a relationship between two organisms where one gets benefit and other get harm. 
Explanation: 
Parasitism is a type of symbiotic association that is present between two different organisms. In association, one organism gets benefit from the other and the other is damaged. For example, association between mosquitoes and human is parasitism because mosquitoes get benefit in the form of food while human is damaged due to disease cause by mosquito biting. 
 
        
                    
             
        
        
        
Answer:
the action of rotating around an axis or center