Question 3 (of 20) 3 Facebook is O a social networking site that allows people to exchange photos, videos, and comments O a website that enables users to send and receive messages up to 140 characters long. O a business-oriented website that lets users post their profiles and connect to a network for businesspeople. O a video-sharing website in which users can upload, distribute, and view videos. O an information site that allows users to connect through e-mail