Concept:To find the straight-line distance, measure the direct distance between the two points on the map and convert it using the map scale.
Explanation:The phrase "as the crow flies" means a straight-line distance, not the distance along roads.
So, do not follow winding road paths with the thread.
Place a ruler or a taut thread directly between the centres of Umughara and Ndifu Achara.
Mark the measured length on the edge of a paper or note it from the ruler.
Now, compare this length with the linear scale given on the map.
The scale shows how many kilometres on the ground correspond to the measured map distance.
This gives an approximate ground distance of
11 km.
Answer:11 km (Option C).
