Which feature of a map shows the relationship between a distance on a map and that distance on earth? key scale grid system compass rose

scale

Explanation:

A scale on the map is used to show the ratio of the map distance to that of the ground distance and thus is important tool of the geographics analysis if the earth landscape and its features,  and it's due to this variation of the surface features on the earth which now is shrunken to form a map projection .A scale is generally represented by a bar that shows the kilometers and miles to inches and is given on the left-hand side, this representation of the earth is essential for the study of the large, small and medium scale maps. A large scale map is 1:0 – 1:600,000 in range and that of the medium is 1:600,000 – 1:2,000,000, and that of the small scale map is 1:2,000,000 – 1 depending on the depth of the information to be shown.

Ithink the answer is either a , c or d