How would quartz be useful to someone who is lost in the woods? (site 1)

Quartz is useful if you are lost in the woods because it can help you start a fire. Most people who die in the woods do so because of hypothermia, and the best way to prevent this from happening is by having a fire. Not only would the fire keep you warm, but it would ensure that your clothes stay dry. Fire also lets you keep animals away, and if necessary, cook meat before you eat it.

i think it's b or c hope this

answer; proximity;