The owner of a window-treatment company wants to design shades that will cover the windows of a house. The shades should also warm the house by maximizing the absorption of solar energy coming through the windows.

A black surface absorbs more incoming solar energy than a white surface, which reflects more of it. A textured surface has more area exposed to sunlight than a smooth one, helping it absorb more energy. Therefore, black and textured shades would best warm the house.

AI-written and checked against the verified answer.