Based on the information given, the correct option is C. The ball pushes back on Stuart's foot with an equal force.
According to Newton's third law of motion, when two bodies interact, they will apply forces that are both equal in magnitude and opposite in direction.
When Stuart kicks a ball forward with a certain amount of force, as shown below, according to Newton's third law of motion, the ball pushes back on Stuart's foot with an equal force.
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