Which data type would most benefit from the use of supplemental contours?

The use of supplemental contours is particularly advantageous in highly variable terrain because these areas often feature significant changes in elevation over relatively short horizontal distances. Supplemental contours are additional contour lines drawn between the primary contour lines, allowing for a more precise representation of the terrain's shape and slope. In regions where the land's relief is steep, complex, or varied, standard contour spacing may not provide sufficient detail for effective analysis or navigation. The supplemental contours enhance the understanding of the terrain's characteristics by illustrating the intricacies of the landscape, which can be crucial for activities such as construction, land-use planning, and environmental assessment.

In contrast, flat terrain typically does not require additional contour information since elevation changes are minimal and contours may be sparse. Urban landscapes may also utilize different methods of representation and may not benefit as much from contours due to man-made features and structures. Sparse vegetation areas might not display significant topographic variations either, limiting the necessity for more detailed contouring in those settings.