When the light is turned off, the human eye dilates. The light is the stimulus and the human eye dilation is the response.
What is stimulus?
- "It is a thing or event that evokes a specific functional reaction in an organ or tissue."
- For example: when we touch a hot plate, we retreat our hand. In this, hot is stimulus and retreating of our hand is response.
What is response?
- "It is a reaction to something or more specific it is a reaction to a stimulus."
What is dilation?
- "It is the action or condition of becoming or being made wider, larger, or more open."
In case of low/dim light our pupils dilate in order to allow more light to pass through. Here the dim light is stimulus and dilation of pupil is the response.
Hence, the correct option is B. the light is the stimulus and the human eye dilation is the response.
To know more about stimulus here
https://brainly.com/question/298785
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