Read this excerpt from The Diary of Anne Frank. Mrs. Van Daan. (Rising, nervous, excited) Something's happened to them! I know it!

Mr. Van Daan. Now, Kerli!

Mrs. Van Daan. Mr. Frank said they'd be here at seven o'clock. He said . . .

Mr. Van Daan. They have two miles to walk. You can't expect . . .

Mrs. Van Daan. They've been picked up. That's what's happened. They've been taken . . .

(Mr. Van Daan indicates that he hears someone coming.)

Mr. Van Daan. You see?

Which tone would be most appropriate for a trailer that includes this scene?

informal
humorous
mysterious
educational