❓ Câu hỏi According to the passage, what was a major limitation of earlier research on animal cognition?
- A. A. It relied too heavily on laboratory experiments rather than natural observations.
- B. B. It focused predominantly on primates, thereby overlooking cognitive abilities in other animal groups.
- C. C. It failed to recognize the importance of ecological pressures in shaping intelligence.
- D. D. It overestimated the brain-to-body ratio of corvids compared to that of great apes.