These three crates are all 1 m off the ground. Which statement about the force of the Earth's gravity pulling on the crates is true?

The formula for the force of the Earth's gravity is

F = mg

where m is the mass of the object and g is the acceleration due to gravity

The value of g is a constant, therefore, the only value that would differ among the three crates is the mass. The greater the mass, the greater is the force of the pull of the gravity.