Concept:Stone crushing is often associated with highland or mountainous areas where hard rocks are quarried.
Explanation:On the map, Umughara is located in an area with the highest contour values.
High and closely spaced contour lines indicate a mountainous or hilly terrain.
Such rocky highland areas provide the raw materials needed for stone crushing.
The other settlements, Noyo, Ameka, and Agub, do not show this significant relief feature.
Therefore, stone crushing is most likely carried out around Umughara.
Answer:C. Umughara
