Questions: Which of the following statements is true of the cones of the eye's retina? Multiple Choice Cones are not light-sensitive. Cones operate best in the dark. Cones require a larger amount of light to respond than the rods do. Cones are not found in the fovea.

The answer is the third one: Cones require a larger amount of light to respond than the rods do.

Explanation for each option:

1. Cones are not light-sensitive.
   This statement is incorrect. Cones are indeed light-sensitive; they are responsible for color vision and function best in bright light conditions.

2. Cones operate best in the dark.
   This statement is incorrect. Cones do not operate well in the dark; they require bright light to function effectively, which is why they are not useful for night vision.

3. Cones require a larger amount of light to respond than the rods do.
   This statement is correct. Cones are less sensitive to light compared to rods, which means they require more light to be activated. Rods are more sensitive and are responsible for vision in low-light conditions.

4. Cones are not found in the fovea.
   This statement is incorrect. Cones are densely packed in the fovea, which is the central part of the retina responsible for sharp central vision.

In summary, cones are responsible for color vision and require more light to function compared to rods, which are more sensitive and operate better in low-light conditions.