Which part of human brain is responsible for walking in straight line?

Cerebellum

The correct answer is Option (4) - Cerebellum

The cerebellum, located at the back of the brain beneath the cerebrum, plays a crucial role in coordinating voluntary movements and maintaining balance and posture.

The cerebrum, located at the front and top of the brain, is responsible for higher cognitive functions such as thinking, reasoning, problem-solving, and decision-making. While the cerebrum is not directly responsible for the physical act of walking, it does play a role in coordinating and initiating voluntary movements through its motor areas, including the primary motor cortex.

The hindbrain comprises pons, cerebellum and medulla (also called the medulla oblongata). Pons consists of fibre tracts that interconnect different regions of the brain. Cerebellum has very convoluted surface in order to provide the additional space for many more neurons. The medulla of the brain is connected to the spinal cord. The medulla contains centres which control respiration, cardiovascular reflexes and gastric secretions.