Answer:
In the book "Hatchet" by Gary Paulsen, Brian is a young boy who is stranded in the wilderness after a plane crash. As he tries to survive, he learns many new skills, including how to read the tracks of animals in the sand.
Brian's attempts to read the tracks in the sand ultimately lead to an important discovery when he comes across a set of tracks that are different from any he has seen before. They are larger and deeper than any other tracks he has seen, and he realizes that they must belong to a large predator.
Brian's curiosity and determination to learn more about these tracks lead him to follow them, which leads him to the discovery of a mother bear and her cub. This encounter with the bears teaches Brian many things about survival in the wilderness, including the importance of respecting the natural environment and understanding the behaviors of wild animals.
Overall, Brian's attempts to read the tracks in the sand culminate in an important discovery because they lead him to an encounter with a mother bear and her cub, which teaches him valuable lessons about survival and respect for the natural world.