Topography maps are best used for which activities?

To see land elevation or underground elevation.

Explanation:

You can use it to know what it under the ground before digging if you need a space to construct a building or parking. Or perhaps, even when building a house.

Topography: In simple terms arrangements of the a various in a more systematic order to provide more authentic and real information or set of data to each individual about the certain place, which may be Urban or rural areas etc.

do you have a picture?

i believe it is "they are not used up by reactions" as the answer to your question, text me back if this is correct because i just learned this.