How does Polydectes respond to Perseus leaving on his mission

i think its d

hope i can you

  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.

uhh i would say.. 100 years or innovation?