Question

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

Explanation:

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

Answer:

rod