Question

one part of the nervous system controls involuntary processes, such as the heart beating. which system controls involuntary processes in the body?

somatic nervous system

autonomic nervous system
sensory nervous system

Explanation:

The somatic nervous system controls voluntary movements. The autonomic nervous system regulates involuntary processes like heart rate, digestion, etc. The "sensory nervous system" is not a standard division for controlling involuntary processes. So the autonomic nervous system is the one that controls involuntary processes.

Answer:

autonomic nervous system