The police have set up a special hot ..... so that people can get in touch to find out about the accident. (*) connection (*) line (*) communication (*) phone
This is a companion discussion topic for the original entry at https://english.best/questions/3782,the-police-have-set-up-a-special-hot-___-so-that-people-can-get-in-touch-to-find-out-about-the-accident/