Answer:
Ok so first I would like to point out that the question was about the person showing up. BUT based on what I just read the answer is A.) Only because it was all nice and calm then turned to scary and a bit shocking at the end.
Explanation:
I think A.) because its about two people dancing and enjoying the movements turning into people being shot down.
Planet earth spins at the speed of 1675 kilometers/hour or 465 meters/second or 1040 miles/hour.
Answer: 1675 kilometers/hour or 465 meters/second or 1040 miles/hour
Answer:
When you are prepared it will be more simple to solve your problems, like a fire drill. If you are not prepared for it you will die (unless you have very good luck) or like a test, when you prepare for a test you will most likely get a good grade but when you don't study be prepared for a bad grade.
Hope this helps ;)