Comparative foreign policy approach has developed through the way Rosenau opened for reaching testable generalisations by cross-national analysis. According to this approach, “events could be compared along behavioural dimensions, such as whether positive or negative affect was being displayed, or what instruments of statecraft (e.g., diplomatic, military, economics, etc.) were used in the influence attempt, or what level of commitment of resources was evident”, and thus behaviour as disparate as a war, a treaty, and a state visit can be compared and aggregated in a theoretically meaningful fashion (Hudson, 2014, 21). This is because this approach rejects that events are unique. In accordance with this rejection, the comparative foreign policy approach attempts to formulate a foreign policy theory that is scientific in the sense that it can be generalisable.

The correct answer is A.