Respuesta :
i think it's because all the other colors are dark and the darker the color, the more heat it absorbs. yellow or white or basically light colors would reflect the light. this is just if it is talking in terms of temperature.
Answer:
D) He knew that light colors reflect energy, so they would be coolest.
He knew that light colors reflect energy, so they would be coolest. George used his knowledge of heat to help him choose the yellow tube. He knew that light colors reflect energy, so they are cooler. He knew that dark colors absorb energy, which makes them hotter. All of the tubes were dark colored, except yellow. Yellow was the lightest, so he chose it.
hopes it helps:)