Which of the following property of language enables language users to overcome the barriers caused bytime and place, due to this feature of language, speakers of a language are free to talk about anything in any situation? （ ） A: Duality. B: Transferability C: Arbitrariness D: Displacement

Which of the following property of language enables language users to overcome the barriers caused by time and space, due to this feature of language, speakers of a language are free to talk about anything in any situation? A: Transferability B: Duality C: Displacement D: Arbitrariness