The force of gravity between two objects depends on their masses and the distance between them. Since the Earth's mass is constant, the only factor that changes the gravitational force is the mass of the object.

Therefore, the object with the greatest mass will have the greatest force of gravity to Earth at its surface.

It's important to note: This is a theoretical answer. In reality, the force of gravity is extremely weak for objects we encounter in everyday life. For example, the gravitational force between you and your chair is negligible compared to the Earth's gravitational pull on you.