An accelerated heartbeat is to a slowed heartbeat as thesympatheticnervous system is to theparasympatheticnervous system.What do you mean by the Nervous system?Thenervous systemis a complex network of nerves andcellsthat carries signals between different parts of the body. It controls both voluntary actions, such as walking and talking, as well as involuntary actions, such asbreathingand digesting food. The nervous system is made up of the central nervous system, which includes thebrainandspinal cord, and the peripheral nervous system, which includes all the nerves that extend from the central nervous system to the rest of the body.The body's "fight or flight" response, which is characterised by an increase inheartrate, is brought on by thesympatheticnervous system. The body's "rest and digest" response, which is characterised by a drop in heart rate, is brought on by theparasympatheticnervous system. As a result, the parasympathetic nervous system causes a slowed heartbeat while the sympatheticnervous systemcauses an accelerated heartbeat.Hence, Option C is correct.To know more abouttheNervous system,brainly.com/question/16332322#SPJ4...

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