Answer:
d. Sympathetic
Explanation:
Sympathetic is a division of the autonomic nervous which controls the inside of the body unconsciously . Its' main or primary process is to stimulate the body's fight-flight-or-freeze response. It is normally active to maintain homeodynamics of homeostasis.
In the question, Joe is preparing to spar with an opponent. He will need the fight-flight-freeze response, the Sympathetic nervous system will be activated.
