What impact does basic lava generally have on the landscape?

Basic lava, characterized by its low viscosity and fluidity, tends to flow easily over long distances. This property allows it to accumulate in broad, gently sloping structures known as shield volcanoes. These are formed by the repeated eruption of low-viscosity lava that spreads out in thin layers. As a result, the landscape around a volcano that primarily emits basic lava usually features these gentle, rolling hills or broad volcanic cones, rather than steep or jagged formations.

In contrast, options mentioning explosive eruptions or steep mountain ranges relate to other types of lava or volcanic activity, such as those produced by more viscous, acidic lavas that trap gas and lead to more violent eruptions. Destructive mudflows, often associated with heavy rainfall or rapid melting of snow due to volcanic activity, do not accurately represent the typical landscape shaped specifically by basic lava flows. Therefore, the gentle slopes created by basic lava flows are a direct result of its characteristics and behavior during volcanic activity.