The area of message exchange between the neurons begins to operate faster the more a person practices a particular activity.

true

or

false?

True.
there will be more chemicals I.e. neurotransmitters present. e. g. of neurotransmitters is acetylcholine (AcH).

if action is repeated, more neurotransmitters will be synthesized at the axon terminals to be secreted into the synaptic cleft or muscle terminal ends which ends in a response.

According to edgenuity, the answer is c.