H.E.L.P. This position, the Heat Escape Lessening Position, or H.E.L.P., aims to protect some of the areas of your body most prone to heat loss - the head, neck, sides of the chest cavity and the groin area. If you are wearing a life jacket, this position can be very effective.
The answer is cardio respiratory endurance :)
Depends on genetics, past attempts, there’s not a straight precent there’s a lot of factors.
The answer is A, from smallest to biggest