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Answer:
The correct answer is a) Spring.
Explanation:
Simple machines are those with few or no moving components. They facilitate work, the amount of energy required to move an object over a distance, by allowing us to expend less effort, or the force necessary to move an object. A spring is a type of energy storage and release system. A device must exchange the magnitude of a Force with the distance it must be applied to accomplish Work in order to qualify as a simple machine. Because a spring does not enable the exchange of F or D, it does not fit the physics definition of a simple machine.