Question

practice it
photoreceptor that is sensitive only to the intensity of light
coil
stick
bolt
rod
handle

Explanation:

In the context of photoreceptors in the eye, rods are specialized cells that are highly sensitive to the intensity of light. They are responsible for vision in low - light conditions. Coils, sticks, bolts, and handles are not relevant terms for this biological photoreceptor function.

Answer:

rod