Question

the point of excitation that must be reached for a neuron to fire is called
o action potential
o resting potential
o threshold

Explanation:

A neuron fires when the membrane - potential reaches a certain level. The resting potential is the normal state of the neuron's electrical charge. The action potential is the electrical impulse when the neuron fires. The threshold is the specific level of depolarization that must be reached for a neuron to fire.

Answer:

Threshold