Answer:
The boy is a bully because he is instigating a fight and taunting to cause trouble.
In balanced forces, the magnitude of the two forces is equal, whereas, in the case of unbalanced forces, the magnitude of the two forces are unequal. In balanced forces, the two individual forces act in opposite direction. Conversely, in unbalanced forces, the individual forces either act in same or opposite direction And it affects it because Balanced Forces acting on an object will not change the object's motion. Unbalanced Forces acting on an object will change the change the object's motion.
Start with a claim and reasoning
The answer is "B" I think. That would be my guess. But again, I could be wrong.
:P