I would think C would be the answer but I’m not completely sure
<span>B.
Lava, ash, and other materials from volcanic eruptions gradually build up over time. This is the correct answer. The volcanic molten material is ejected from fissures or initial cones and as the lava flows out and cools and as the pyroclastic materials solidify and tumble down the slopes, they build up the flanks of the volcanoes.</span>
Very much like our provinces.
I live in Canada. We take great pride in our provinces and their differences and similarities.
The answer would be depressions. Hachure lines, or lines with teeth, describe depressions. These lines are concentric lines which indicate a closed depression. These lines show orientation of slope and they provide an idea to the steepness of that area.