PLEASE HELP 8PTS GUARENTEED! Helpful answers appreciated! How did Newton describe the concept of gravity and how did it add to the building knowledge of the movements of the heavens?

The legend is that Newton discovered gravity when he saw a falling apple while thinking about the forces of nature. Whatever really happened, Newton realized that some force must be acting on falling objects like apples because otherwise they would not start moving from rest. Gravity is what helps keep objects upright in space, so without gravity we'd all be floating around right now.

i think it would be a

  the common sense as a pamphlet written by thomas paine. it promoted the independence of the colonies from british rule. the distribution of this pamphlet was great, it reached people everywhere and it was even read aloud at places people met. it also unite the colonists before the revolutionary war.

answer is d