Question

within a neuron, messages travel in a(n) ______ form.

○ chemical
○ liquid
○ static
○ electrical

Explanation:

Neurons transmit messages within themselves via electrical impulses (action potentials) along the axon. Chemical signals are used between neurons (at synapses), while "liquid" and "static" are not relevant to neuronal signal transmission. So the correct form is electrical.

Answer:

D. electrical