Bacalah paragraph berikut, kemudian jawablah pertanyaan di bawah. a. Tulislah topic Sentence (Kalimat Topic) b. Sebutkan Main Idea atau gagasan utama ( dalam bentuk phrase atau frase) carry the bottles. Brom and smith introduced the concept of roles to public relations. Like the models described in the previus chapter, public relations roles have become the subject of extensive research by public relations scolars Roles detune the everyday activities of public relations practitioners are communication teacnicians.. and public relations departmens and communications programs could not function without them. Unless a department also has a practitioner in the role of communication manager, however, it cannot contribute to the strategic management of the organization and cannot make the organization more effective. This chapter reviews the extent to which tour communication roles - manager, technician, communication liaison, and media relations- actually describe the practice of public relations, it then reviews the causes and effects of those roles- effects thatshow that senior person in a public relations department must be a manger for it to be excellent.​