Which statement is a main idea of "Bears on the Lewis and Clark Expedition?
1. Hugh McNeal used the gun as a club to defend himself against a bear.
2. Because of their great size and straight claws, grizzly bears are not good at climbing trees.
3. Native Americans only hunted for grizzly bears when they were with a large group
4. Members of the Corps came to respect the power of bears after experiencing bear attacks first hand.