The law that states all
forces act in pairs is
A. the law of inertia
B. the law of mass times
acceleration
C. the law of action/reaction
D. Newton's 4th law

c -the law of action/reaction

Explanation:

forces always act in pairs thus every time one object exerts a force on another object, the second object exerts a force that is equal in size and opposite in direction back on the first object.

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