How does the author develop the Unicorn’s character in this passage? “I always thought they were fabulous monsters!” said the Unicorn. “Is it alive?”

“It can talk,” said Haigha, solemnly.

The Unicorn looked dreamily at Alice, and said, “Talk, child.”

Alice could not help her lips curling up into a smile as she began: “Do you know, I always thought Unicorns were fabulous monsters, too! I never saw one alive before!”

“Well, now that we have seen each other,” said the Unicorn, “if you'll believe in me, I'll believe in you. Is that a bargain?”

“Yes, if you like,” said Alice.

-He uses the Unicorn’s actions to show a changing attitude: at first the Unicorn dreams about monsters, but later he smiles at Alice.
-He uses the Unicorn’s conversation with Alice to show a changing attitude: at first the Unicorn thinks Alice is a monster, but later he becomes her friend.
-He uses the Unicorn’s thoughts to show a changing attitude: at first the Unicorn wonders if Alice is alive, but then he thinks she is funny.
-He uses the Unicorn’s beliefs to show a changing attitude: at first the Unicorn believes Alice is a monster, but then he believes in the Lion.