The best way is to just relax and try to act naturally. Just be calm and try to make it a bit funny to hide fear. :)
In my opinion its:
Both 3 and 4.
Then 2.
And last 1, but they both have equal chance. of getting injured.
Answer:
Beach, this should not be for any school stuff that's wrong if it is because some people struggle with stuff like this but if it was only supposed to be some kind of lesson or whatever then i'm sorry.
Explanation:
