What was one of Galileo's most important discoveries?

A. all objects with gravity

B. all objects in the universe

C. all objects with weight

D. all objects on earth

A. All objects with gravity

Explanation:

Galileo discovered the Law of Falling Bodies. All free-falling objects show constant acceleration. It states that all objects will fall at an equal rate, when taking into account minor differences in aerodynamics and weather conditions. To make a demonstration, he climbed to the Leaning Tower of Pisa and dropped several things.