To determine which object would reach 100 feet in the least amount of time, we would typically need information about the initial velocities, weights, or aerodynamic properties of the objects.
If we assume that all objects are subject to the same gravitational acceleration and that they are dropped from the same height, they would all reach 100 feet at the same time due to the principles of free fall.
However, without more information about the specific properties of objects A, B, and C, we cannot definitively say which one reaches 100 feet first.
Based on the options given, if the statement "They would all reach 100 feet at the same time" applies (assuming they are dropped under the same conditions), that would be the correct choice. If they have different starting velocities or forces acting upon them, the answer would depend on that specific context.