Which of the following scale types is best for layouts that need to be resized?

The optimal choice for layouts that need to be resized is the bar scale. A bar scale, also known as a graphic scale, visually represents distances on a map and is proportionately adjusted as the map size changes. This adaptability makes it particularly effective for ensuring that users can accurately interpret distances regardless of how the map is resized.

When a map layout is enlarged or reduced, the bar scale maintains its relative measurements without requiring recalibration, allowing for straightforward comprehension of distances in the field. Users can easily see the relationship between the graphic scale and the map space, making it a reliable tool for practical navigation.

On the other hand, a verbal scale conveys distance in words (e.g., "1 inch equals 1 mile") and can become misleading if the map is resized since the scale's translation remains constant but the map's physical space does not. Similarly, a fractional scale (like 1:50,000) indicates a fixed ratio that does not visually update as the map is scaled, which can lead to misinterpretation. Proportional symbol scales are used for representing quantities by varying the size of symbols, but they do not specifically address distance measurement in relation to resizing layouts. Thus, the bar scale stands out as the most flexible and effective