Base your answer to the following question on the topographic map below and on your knowledge of Earth science. On the map, points A, B, C, and D represent surface locations. The dashed line between points C and D represents a hiking trail. Elevations are in feet (ft). The gradient between location A and location B is approximately... * Captionless Image
0.04 ft/mi
25 ft/mi
40 ft/mi
50 ft/mi