Howdy. I would say that A and C are going towards the same thing and without thinking too much. I think you could do some sort of light and gravity test experiences with the flashlight and the steel ball to check between the two of the answers. I think if you go deeper in space you experience perfect stillness, but if you are in an orbit you do experience some sort of gravity. This is what I recall from physics. So, I pick answer A. Thank you for reminding me of my favorite physics teacher and his puzzles!