What system includes the brain, spinal cord, nerves, and sensory receptors?

The nervous system is the correct answer because it encompasses the brain, spinal cord, nerves, and sensory receptors. This system is responsible for transmitting signals throughout the body, processing sensory information, and coordinating responses to stimuli. It allows individuals to react to changes in their environment and plays a crucial role in everything from voluntary movements to involuntary functions such as heart rate and digestion.

The brain serves as the control center, interpreting information and sending signals that direct the body's responses. The spinal cord acts as a major pathway for communication between the brain and the rest of the body. Nerves extend throughout the body, facilitating communication and signaling between different parts of the nervous system. Sensory receptors collect information from the environment—such as sounds, sights, and touch—and relay it to the brain for processing.

The muscular system relates to the muscles that enable movement, the cardiovascular system deals with the heart and blood vessels that transport blood, and the endocrine system involves glands that release hormones to regulate various body functions. None of these systems encompass the full range of components described in the question regarding the integration and communication of information within the body.