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Where is the question or the picture

Explanation:

A) 3.2 kg ball

Explanation:

To solve this problem we must apply Newton's second law of motion, and it states:

"The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object."

Being:

F= net force

m=mass of the object

a= acceleration

As acceleration is inversely proportional to mass, we conclude that to have fastest acceleration Beth should use the lighter ball of 3.2Kg mass.