Which passage from the article best supports the idea that some animals use messages to work together?

Question

Honeybees use the language of dance. Their movements tell worker bees where to find the best blooms.
Mantis shrimp have super-powered eyes. They can see light and colors that other creatures can't.
These huge African mammals often keep to themselves. But they all poop in one place, called a midden.
But the beasts, birds, and bees "talk" to each other all the time. They just do so in ways people can't understand.

Answer 1

The passage "But the beasts, birds, and bees 'talk' to each other all the time. They just do so in ways people can't understand." best supports the idea that some animals use messages to work together.