Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?
acceleration and displacement
acceleration and net force
velocity and displacement
displacement and net force

I believe acceleration and net force not 100% sure sorry if wrong

Velocity and displacement.

Apply the conservation of energy, and you’ll see that the maximum kinetic energy equals the maximum spring potential energy

The KE depends on velocity and PE depends on displacement. The KE will decrease as the PE increases and vice versa.

For example, as the maximum displacement is reached, the velocity decreases to 0.

And when the spring returns to 0 displacement, the velocity is at a maximum.

stands for electromotive force and it is measured in volts. despite its name, it is not actually the force in the sense of being a "pushing" or "pulling" (not measured in newtons).an equation that relates emf,  ℰ,  to a battery's terminal voltage, v, current, i, and internal resistance, r, is    ℰ = v + irin this case, the emf can be interpreted as a voltage—a difference in electric potential.i would not say that it would be considered an energy. if emf can be defined as the energy/work per a unit charge from a battery or other electric source, then it is not strictly energy.

"induction" is the process of charging an object without touching it.hope my answer has you : )