The phases of the moon are caused by the changing positions of the earth and the moon in relation to the sun. which items could best be used to represent the sun, the earth, and the moon in a model that shows the phases of the moon? a. a mirror, a fan, and some string b. a flashlight, a basketball, and a softball c. an orange, a grapefruit, and a lime d. a candle, a soccer ball, and a mirror