A leaf fell from a tree branch. The oath it followed is shown in the diagram below. Which of these best describes why the leaf fell in a crooked path instead of straight down?
A-the upward force of the air in the leaf was greater than the downward force of gravity.
B-objects with irregular shapes never fall in straight lines.
C-air currents and gravity applied changing and unbalanced forces to the leaf.
D-once the leaf was in motion, it continued moving in the same direction because the forces were balanced.