A response is

A response is

• A. The brain's interpretation of a stimulus
• B. The transmission of a nerve impulse
• C. The specific reaction shown by a living organism towards a stimulus
• D. The detection of a stimulus

Answer: (C)

A response is the observable action or physiological change an organism shows after a stimulus is detected and processed. It’s the end result—the actual reaction produced because of the signal. The brain’s interpretation is part of processing, but it isn’t the action itself. The transmission of a nerve impulse is the signal that carries information, not the action that follows. Detecting a stimulus is sensing it, which happens before the response. So the best description is the organism’s specific reaction toward the stimulus, such as moving away from heat or blinking in bright light.

A response is the observable action or physiological change an organism shows after a stimulus is detected and processed. It’s the end result—the actual reaction produced because of the signal. The brain’s interpretation is part of processing, but it isn’t the action itself. The transmission of a nerve impulse is the signal that carries information, not the action that follows. Detecting a stimulus is sensing it, which happens before the response. So the best description is the organism’s specific reaction toward the stimulus, such as moving away from heat or blinking in bright light.