Question

within a neuron, messages travel in a(n) ______ form.
static
chemical
liquid
electrical

Explanation:

To solve this, we recall how neurons transmit signals. Within a neuron, the message (action potential) travels as an electrical signal. Between neurons, it's chemical (neurotransmitters), but within a single neuron, it's electrical. Static and liquid are not relevant to neuronal signal transmission. So the correct option is the one related to electrical.

Answer:

D. electrical