The correct statement that explains how rods and cones work to help us see things is:
"Rods detect light; cones detect color; and the brain decomposes the color into green, blue, and red."
Rods are responsible for vision in low light and do not detect color, while cones are responsible for color vision and come in three types, sensitive to red, green, and blue light. The brain then processes the signals from cones to perceive a full range of colors.