Read the paragraph.
Crows are incredibly adept at solving puzzles. In one study, a scientist placed food at the bottom of a plastic tube and then gave a crow a piece of wire. The crow quickly discovered it could not reach the food on its own, so it bent the wire to create a hook and used the hook to pull the food out of the tube.
What is the most likely reason someone would read this text?
to study how to raise a domesticated crow
to discover how crows have adapted to humans
to learn whether crows can perform complex tasks
to understand why crows are becoming popular pets
