Which of these statements is true? A Rocks can only change on the earth's surface
B Rocks can change from one type to another
C Rocks can only change inside the earth
D Rocks never change

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line