In the South Pacific, New Caledonian crows use two different kinds of stick tools. One tool is complex. The crows shape a stick from a rare plant into a hook. The other tool is basic. The crows find a stick without a hook on the ground. The hooked tool is harder to get but is much better than the basic tool at removing prey from holes. When studying New Caledonian crows, ecologist Barbara Klump found that they hold the hooked tools in their claws when not using them, or they carefully put them in a safe place. The crows don't do the same with the basic tools. This suggests to Klump that the ______

Which choice most logically completes the text?

Question

Accepted Answer

hooked stick tools are more valuable to the crows than the stick tools without hooks.

Answer

hooked stick tools are easier for most of the crows to hold than the stick tools without hooks.

Answer

crows prefer to share their hooked stick tools but don't share the stick tools without hooks.

Answer

crows realize that both kinds of stick tools are less effective than their claws are at removing prey from holes.