What crime led to The Which's imprisonment?

• A. She banished all vowels.
• B. She used a magical spell to erase words.
• C. She eliminated too many words, so people couldn't write or speak.
• D. She built a wall to keep words in.

Answer: (C)

The main idea here is how harming language affects a whole society. The Which is imprisoned for removing words from use—eliminating too many words so that people can’t write or speak. In the world of The Phantom Tollbooth, words are the tools that let people think, share ideas, and communicate. If those tools are taken away, communication breaks down, and that kind of damage is treated as a serious crime. That’s why this choice best captures the reason for her imprisonment: it directly attacks the ability to express and convey meaning. The other options describe specific actions, but they don’t emphasize the sweeping consequence on communication in the same way.