Which idea supports the authors opinion about teens and work

it is about the use of non animal tested cosmetics.

answer: metaphor: because there is a comparison between the treasures spread on the ground and the evil seed of adam drifting from the shoreline  

explanation:

  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.