You could possibly record yourself on a tape recorder, something like that, and giving it to the person when you're busy so they can learn while you're gone
Its just that the body is responding to it differently
As a swimmer I have experienced arm circle movement when performing backstroke, however the fact that this could be the answer, also consider D, but I do believe it is my initial conclusion
If a pedestrian lane is properly used by the community, then, avoidable road accidents will be kept to a minimum. The same thing can be said if vehicle safety programs are being practiced by the members of a certain community. This will eventually lead to the preservation of life.