Answer:
I would say G.
Step-by-step explanation:
Use the process of elimination. It couldn't be the first one because we don't know the properties of the wagon. We are not given nor are we able to get that information. We know it is not H because we do not know what the mass of the wagon is. And finally, it couldn't be J because we do not know the force being applied, nor do we know if the toy wagons are different. However, we do know the incline/properties of the ramp, and we are trying to pull the wagon, so G is the only one that makes logical sense.