Concept:R. Kafue rises from an elevated, broad and relatively flat upland surface known as a plateau.Explanation:On the map, the source of R. Kafue is located in a high area with a flat or gently undulating top. This landform is a plateau. A ridge is a narrow, elongated crest, while a knoll is a small rounded hill, and a conical hill has a pointed peak. None of these match the broad flat upland shown at the river's source. Hence, the source of R. Kafue is a plateau.Answer:Plateau (Option A).