Answer: Cerebellum.
Explanation:
To explain this, the person cannot walk again after the accident. Therefore, it has lost its control over its balance and muscle control. These functions are controlled by the cerebellum. Cerebellum is the part of the brain which controls the muscle control and equilibrium of the body. It plays a vital role in the motor movement and balance control of the body. Also, it maintains posture. It is in charge in keeping our balance so that we could walk well and straight.