Absolutely random question, but I would use a large hammer and smash my rock to piece. :/
I think the correct answer is B.
Answer: Antarctica
Explanation: According to NOAA.com "What we call the ozone hole is a thinning of the protective ozone layer in the stratosphere (the upper layer of Earth's atmosphere) above Antarctica that begins every September. Chlorine and bromine derived from human-produced compounds are released from reactions on high-altitude polar clouds."
The answer is B, silk. I think I'm correct