Match each unit with its basic function. One function is extra.Example: 0 CellsAnswer: communication via mobile data
Skype
пустоvideo conferencing
Amazon
пустоe‑commerce
Facebook
пустоsocial networking
Windows
пустоoperating system
YouTube
пустоdiversity of videos
Application
пустоproviding an access to the information
Microsoft Word
пустоworking with texts
Flash drive
пустоtransferring files from one computer to another