Given the fact that:  The further objects are away from each other, the smaller the gravitational force.  Answer the question:   The sun exerts gravitational force on all the planets, which has a lower gravitational force earth or mars?
mars

Given the fact that:  Electrons at lower energy levels, which are closer to the nucleus, have less energy.  Answer the question:   An electron with a low energy level will have energy that is lower or higher?
lower

Given the fact that:  Less massive objects also have less gravity than more massive objects.  Answer the question:   Mary was comparing the size of two objects. If she examined an orange and compared it with a watermelon, which would generate more gravity orange or watermelon?
watermelon