Please answer the following question by reasoning step-by-step.
She was processing the wool, she kept her leg bouncing to operate the what?\nOptions:\n- hospital bed\n- legroom\n- spinning wheel\n- grand piano\n- rhythm

spinning wheel
Spinning wheel is a household machine for spinning yarn with a spindle driven by a wheel attached to a crank or treadle.

She was processing the wool; she kept her leg bouncing to operate the spinning wheel.

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Final answer: spinning wheel