What is the author's viewpoint in "These Crows Almost Died Out Before Scientists Discovered They Use Tools"?
A:The way that crows and humans use tools is very similar.
B:The discovery of an animal that uses tools is an important event.
C:Of the animals that use tools, crows are most skilled.
D:Rutz may have found additional bird species that use tools if he had expanded his study.
Question 2
Part B
How is the viewpoint in Part A conveyed in the text?
A:by explaining that studying tool use in animals could lead to finding a connection to tool use in humans
B:by stating that Rutz was reluctant to search for bird species in remote areas because of the risk
C:by comparing crows' behaviors with tools to behaviors in other tool-using species
D:by describing how both crows and young children are naturally curious at birth
