Question

how is the elevation displayed on a topographic map?
○ contour lines
○ contour intervals
○ index contours
○ intermediate contours

Explanation:

Contour lines are the core feature used to show elevation on a topographic map, connecting points of equal elevation. Contour intervals are the vertical distance between contour lines, index contours are labeled, prominent contour lines, and intermediate contours are additional lines between index contours—these are all components related to contour lines but not the primary way elevation is displayed.

Answer:

A. contour lines