Which part of the brain is instrumental in making it possible for a person to perform activity such as picking up a pencil from the floor ?

Cerebellum

The correct answer is Option (4) -Cerebellum

The part of the brain instrumental in making it possible for a person to perform activities such as picking up a pencil from the floor is the Cerebellum.

The cerebellum is responsible for coordinating voluntary movements, maintaining posture, balance, and motor learning. When you reach down to pick up a pencil, your cerebellum helps to control and coordinate the intricate movements of your muscles to ensure precise and smooth execution of the task.