The right answer for the question that is being asked and shown above is that: "because it stretches the muscle and joint without causing painunsafe." A static stretch is safe <span>because it stretches the muscle and joint without causing pain </span><span>unsafe.</span>
Well to be clear, answer option D is definitely not something you should do in case of an avalanche, let alone something you are capable of doing if you are buried.
Keeping you hands up so as to make it easier for your rescuers to find you (and pull you out), using a rescue beacon, and lastly thrashing your arms (although if you are buried, it would help much) to create a pocket of air that you can breathe and can cave in on rescuers is a good way of helping your rescuers find you.
ANSWER: A) triggers that cause stress.