Propagation of an Action Potential Along an Axon Is Dependent

Propagation of an action potential along an axon is dependent on a(n) :

A) Complete myelination of the axon by glial cells.
B) Anterograde diffusion of the electric potential with active generation of new potentials.
C) Rapid repolarization associated with passive diffusion of Cl-.
D) Retrograde diffusion of the electrical potential.
E) Na⁺/K⁺ pump moving sufficient quantities of Na⁺ into of the cell and K⁺ out of the cell.