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Engineers have developed bear-proof recycling and trash bins, like the ones below. Humans are able to open the trash containers
by pressing a latch, but bears cannot.
These containers work because
A. bears do not have complex brains, and they cannot learn or modify any behaviors.
B.
bears have more complex brains and are able to learn and modify their behaviors better than humans.
C.
humans have more complex brains and are able to learn and modify their behaviors better than bears.
D. only humans have complex brains and are able to learn and modify their behaviors.
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