Answer:
If possible, set up a camp in an area with good visibility so rescuers will be able to spot you.
Step-by-step explanation:
The passage focuses on the time when you have to stay a night during the hike. Therefore, the details stating "If possible, set up a camp in an area with good visibility so rescuers will be able to spot you" best suites the paragraph.
All the other options are either during the hike or before the hike, none states while having to stay the night in the woods.
I hope the answer was clear.
Thanks for asking.