Some children are trying to get supplies from their tree house, what's the best simple machine for it??
A. Lever
B. Pulley
C. Wheel and axle
D. Screw
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Some children are trying to get supplies from their tree house, what's the best simple machine for it??
A. Lever
B. Pulley
C. Wheel and axle
D. Screw
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Answer:
A. lever is your answer