Read this passage from Through the Looking-Glass. The Lion had joined them while this was going on: he looked very tired and sleepy, and his eyes were half shut. “What's this!” he said, blinking lazily at Alice, and speaking in a deep hollow tone that sounded like the tolling of a great bell.

“Ah, what is it, now?” the Unicorn cried eagerly. “You'll never guess! I couldn't.”

The Lion looked at Alice wearily. “Are you animal—vegetable—or mineral?” he said, yawning at every other word.

Which character trait does the Lion display in this passage?

energy
exhaustion
intelligence
strength