Answer:
Route A
Explanation:
From the topographical map, one can determine the steepness of the mountain. Close contours indicate a steep slope but wide contours depict a gentle and a broad slope. The wider the contours, the broader is the slope.
In the given image, the most favorable path will be route A as the contours are widely arranged, indicating a much gentle slope. The route might be long but is efficient. So the mountaineer will decide to take the route A to climb the mountain without much difficulty and risk factor.