Georgio is jogging barefoot along the beach when he suddenly steps on the sharp edge of a broken shell. he instantly feels pain due to the message carried to his brain by he then slowly walks home with an achy foot. the message of the ache is carried b

Georgio instantly feels pain due to the message carried to his brain by myelinated axons.  The message of the ache is carried by unmyelinated axons.
The myelinated axon is highly "insulated" axon that receives input and transmit impulse quickly.
The purpose of the naked axon with larger dendritic field which is called unmyelinated axon is to receive as much input as possible.

The casefor proofs

The answer is c the potato slice shriveled because water moved out of the slice into the salt solution