D). If the crosswalks were painted it would it make it more visible to cars. It would also be more visible to pedestrians so they don't Jay walk and get hit.
On a sunny day, a black leather car seat would be hotter than a tan cloth seat.
To reduce heat in a parked car on a sunny day, foil shields can be placed against its windshield. Foil has a reflective surface, so sunlight bounces off instead of being absorbed.
