Which is an example of the use of tools?
 Hunters build a stick fence to force animals being chased into a canyon with no other exit.
 A man holds his hands still in a stream, slowly wiggling his finger to “tickle” and catch a fish.
 The women of a traveling tribe pick leaves, blossoms, and seeds from some plants and pull up the roots of others to use for food and medicine.
 Hunters chase wild game animals over a cliff to be killed by the fall.