The choices dont say that there is a chance for rescue, Ive done the survival thing before and it is very hard to do unless really taught the correct steps and what to avoid to not poison yourself, die of hypothermia, be eaten alive by bugs , or drink water thats loaded with parameciums and yada. Someone with aknife can build a shelter, kill an animal, hollow out a log or root, cut greens, etc. The shelter could be built with local materials . I learned all that a long time ago and would probably keel over after about four days of misery. Unless........