The correct option is A Brain
The brain is the control center of the body. It consists of three main components- forebrain, brainstem, hindbrain. The brain is important in the human body, because it allows a person to think, feel and store memories, and it controls and coordinates the body's actions and reactions. The brain is an incredibly complex organ composed of many parts, including the cranium, the cerebrum, the brain stem and the cerebellum.