The correct answer is option B. According to Newton’s third law of motion, the balloon is pushed forward as the air is forced out. 
Newton's third law of motion states that to every action there is an equal and opposite reaction. The same law will apply on the balloon. As the air is forced out of the balloon it will exert an opposite force on the balloon which will cause the balloon to be pushed forward. If the air would not have caused an opposite force on the balloon causing it to be pushed forward it would have remained static. But, reaction of the outgoing air pressure made the balloon to move forward.
 
        
                    
             
        
        
        
Answer: Option B.
Obese and over eating
Explanation:
A leptin deficient move would be obese and overeating because leptin is an hormone produced by fat cells that decrease appetite and when it is deficient in the body,the body assumes that there is no enough fat in the body and it send signals for intense hunger and overeating or uncontrollable eating of food which result in accumulation of fats, there by resulting in obesity.
 
        
             
        
        
        
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❖ The correct answer is "After the process of DNA replication occurs, each daughter cell receives an extra copy of parent cells DNA.
DNA replication occurs in interphase.
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