How does neural transmission across a synaptic gap occur?

W) Neural impulses cause the release of neurotransmitters that diffuse across the gap

X) Neural impulses open potassium-gated channels, allowing sodium to move across the gap

Y) Neural impulses travel across the gap as unidirectional electrical currents

Z) Neural impulses travel across the gap as multidirectional electrical currents
W) NEURAL IMPULSES CAUSE THE RELEASE OF NEUROTRANSMITTERS