Final answer:
A soccer ball remains at rest on a field because it is in a state of equilibrium, where all forces acting upon it are balanced, resulting in no net force and no motion.
Step-by-step explanation:
The reason a soccer ball remains at rest on the ground is best explained by D. The soccer ball is in a state of equilibrium. A soccer ball at rest is under the influence of various forces such as gravity pulling it down and the support force from the ground pushing it up. In addition, friction between the ball and the ground also plays a role in keeping the ball at rest. For the ball to remain stationary, all forces acting upon it must be balanced, which means the net force is zero, putting the ball in a state of equilibrium. Options A, B, and C suggest active forces or conditions that might cause the ball to move or affect its state, but the state of equilibrium suggests that these forces are balanced.