Viết lại câu suggested 1) They reported that the expedition reached the south pole in May

-->It

2) People say the computer is one of the most important inventions

--> The computer

search it up on google or think from your brain make it work harder.

  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.

i would say b. good luck!