2. Which of the following best describes a central theme of thepoem?

16.) true

17.) true

18.) no information in the text

19.) false

20.) no information in the text

  this riddles' answer is library.

  the "leaves" are a reference to the books' pages that the library contains; the branches are a network of libraries that connect multiple libraries' collections, resources, and items in a system of a common database, integrating them; the branches' organization are a useful management tool for coordinating the multiple collections many libraries have.