Read the following abstract carefully and decide which sentence tells the topic and method of the research?(1)This paper contrasts American and Chinese campaign practices andreveals the prominence of
culture and its impacts upon the operation of the public communication campaigns、(2)lt is shown in this study that their differences specially lie in ideologies and perceptions、approaches and strategies implementations and evaluations、(3)In running the campaigns, Americans rely heavily on mass media and concentrate on short-term goals while Chinese depend more on interpersonal influences and primarily on long-term social effects、(4)In conclusion, these differences are however attributed to their respective culture orientations