The following text is about animal cognition.
Crows are among the most intelligent birds, capable of using and even creating tools. In one experiment, crows bent wires into hooks to retrieve food from a container—a task requiring planning and problem-solving. They also remember the faces of humans who have threatened them and will scold those individuals for years afterward. These abilities suggest cognitive capabilities once thought to exist only in primates.
What main point does the text make about crow intelligence?
Crows can only use tools that already exist
Crows display sophisticated problem-solving and memory abilities
Crows are more intelligent than all primates
Only crows can remember human faces
Correct Answer: B
Choice B is the correct answer. The text describes tool creation (problem-solving) and remembering threatening humans for years (memory), both sophisticated abilities.
- Evidence: Tool creation and face recognition/memory.
- Reasoning: These demonstrate advanced cognitive abilities.
- Conclusion: Crows show sophisticated cognition.
Choice A is incorrect because crows "create" tools from wire. Choice C is incorrect because the text says abilities were "thought to exist only in primates," not that crows exceed them. Choice D is incorrect because the claim is about "only crows" is not made.