Braxton is testing 2 different types of motor oil in his truck to determine which one lasts longer between oil changes. He purchases Brand A and Brand B from the auto parts store. He adds Brand A to his truck and Brand B to his sister's car. He then compares the color of the oil at the end of the week from both vehicles and determines that Brand B goes longer between oil changes because it is lighter in color than that of Brand A when he examines it. Why is Braxton's conclusion not valid? He added Brand B to his sister's car, not the truck. He did not determine the starting color of the
A.He added Brand B to his sister's car, not the truck. B.He did not determine the starting color of the oil. C.He purchased 2 different types of oil. D.He added Brand A to his sister's car, not the truck.
Join our real-time social learning platform and learn together with your friends!