Hello!
The balloon explodes, because the pressure builds up inside and the air want to expand. Letter a)
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<span>(c) energy travels from the object at higher temperature 
to the object at lower temperature.
Size and mass have no effect.</span>
        
             
        
        
        
Answer
B. F=ma
Explanation
The Newton's laws of motion tries to explain the how bodies behave and the energy changes when theys are in motion. For the 3 of them to hold, the bodies must be moving in a straight line and with constant velocity. 
The second one states that, "the change of momentum of a moving body is directly proportional to the force producing it and it takes place to the direction of force."
From the choices given, the appropriate answer is B. F=ma