Final answer:
The brain is the part of the central nervous system that processes sensor information and determines if a response is needed. It receives and integrates sensory input, then coordinates responses through the nervous system.
Step-by-step explanation:
The area that processes the information from sensors and determines if the body needs to create a response is the brain. This control center is part of the central nervous system, which also includes the spinal cord. The brain processes sensory information and coordinates a reply, sending signals through nerves to muscles and organs to elicit a response.
The central nervous system is responsible for receiving and integrating sensory information through the nervous system, which then sends out electrical signals to induce a motor response. It functions swiftly, as illustrated by a person quickly reacting to avoid a collision after noticing an obstacle. This process encompasses not only basic physical actions but also higher cognitive functions like reasoning and memory.