BRAINLIEST For work to be accomplished we must have

A. an action which causes movement and an opposite reaction
B. an action which causes no movement or reaction
C. a force and a movement in the opposite direction of the force
D. a force and a movement in the same direction as the force

A., an action which causes movement and an opposite reaction

Explanation:

I don't really know how to explain it, but this helped hopefully! :) Have a bless day

probably not if net force is zero

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge