Explanation
Correct answer: D.
Choice D is the best answer. The text starts by introducing Mitchell’s philosophy about using simple, repetitive language in books for young children. Then it describes a book influenced by that philosophy, Goodnight Moon.
Why the other choices are wrong
Choice A
Choice A is incorrect. Although two authors are mentioned in the text, they both agree about the type of language that should be contained in books for young children.
Choice B
Choice B is incorrect. The text never discusses the evaluation of children’s literature. It does provide one view of how children’s books should be written, but never introduces a competing view.
Choice C
Choice C is incorrect. The text doesn’t mention “many classics of children’s literature.” Instead, it describes an educational theory and identifies one example of a famous children’s book that was influenced by that theory.