Which definition describes the geography term ''scale''?

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Answer-

The scale of a map is the ratio of a distance on the map to the corresponding distance on the ground. This simple concept is complicated by the curvature of the Earth's surface, which forces scale to vary across a map.

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-Sky

Map scale refers to the relationship (or ratio) between distance on a map and the corresponding distance on the ground.

d is the logical answer but im not a 100% sure