Which of the following is a true statement about mass and weight? a. Mass is a measure of how much matter an object has, while weight is a measure of how much space the object takes up. b. Mass will not change based on location, while weight will change based on gravitational pull. c. Mass is a measure of a gravitational pull on an object, while weight is a measure of how much matter is an object has. d. Mass is proportional to the force of gravity, while weight is proportional to the amount of mass.