Yasir uses different styles of speech, or codes, when speaking to teachers and when speaking to his friends. according to the text, yasir most likely uses a(n) code when speaking to his friends.

He uses a casual style

Explanation:

Casual style is the most common type of speech used among friends. Vocabulary and expressions here are relaxed and informal, and speakers often use slang to communicate their ideas. Casual style is not only used in an oral way, it is especially used by young people when they send tex messages. In a chats, teenagers can even abbreviate words and sentences in a few letters. This makes the communication process, (among teens) much easier, shorter and direct.

  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.

that is based on your opinion not an answer someone can just give you unless you want to lie on your opinion. no offense wasn't trying to be rude. tip: use words like instead of don't put do not and you get what i mean