Final answer:
Stimulus is communicated to the brain through sensory organs and structures of the nervous system.
Step-by-step explanation:
The stimulus is communicated to the brain through the sensory organs and structures of the nervous system. When a stimulus is detected by sensory receptors in organs such as the eyes, ears, nose, mouth, or skin, it generates electrical signals. These signals are then transmitted to the brain via sensory nerves, which carry the information to the central nervous system. The brain then processes this information and generates a specific response.
For example, when you see a baseball being pitched to a batter, the stimulus is detected by the eyes. The information about the trajectory and speed of the ball is transmitted to the brain through the optic nerves. The brain processes this visual information and determines the appropriate response, such as swinging the bat or letting the pitch go by.