Final answer:
The true statement about the CNS is that it includes both the brain and spinal cord, controlling mental and physical processes and integrating sensory and motor functions.
Step-by-step explanation:
The statement that is true regarding the Central Nervous System (CNS) is: A) The CNS includes the brain and spinal cord.
The CNS is the command center of the body, responsible for processing and sending out information. It is made up of two primary components: the brain and the spinal cord. The brain is the site of consciousness, thoughts, memories, and emotions. It controls many bodily functions and is divided into regions such as the cerebrum, brain stem, and cerebellum. The spinal cord, on the other hand, is the main pathway for transmitting messages between the brain and the rest of the body. It is involved in both sensory and motor functions, such as coordinating reflexes and relaying sensations.
Contrary to other options presented, the CNS is not primarily responsible for oxygen transport in the bloodstream — that is the function of the circulatory system involving the heart and blood vessels. Moreover, sensory functions are an integral part of CNS activities, and the CNS is composed of both the brain and the spinal cord, not the brain alone.