Question

what is the purpose of a maps scale?
a to list place names.
b to show the mathematical relationship between actual sizes and the sizes shown on the map.
c to show the cardinal directions.
d to indicate the date of publication.

Explanation:

A map's scale is a ratio that shows how distances on the map relate to real - world distances. It helps users convert map measurements to actual sizes. Option A (listing place names) is done by labels, not the scale. Option C (showing cardinal directions) is the role of a compass rose. Option D (indicating publication date) is usually a separate piece of information on the map. Only option B correctly describes the scale's function of showing the mathematical relationship between actual and map - shown sizes.

Answer:

B. To show the mathematical relationship between actual sizes and the sizes shown on the map.