Which type of slope has a gradual incline?

A gentle slope is characterized by a gradual incline, making it easier for vehicles or people to traverse compared to a steep slope. The term "gentle" implies that the increase in elevation occurs over a longer horizontal distance, resulting in a smoother and less abrupt change in height. This type of slope is often found in areas where the terrain transitions more subtly, such as hills or rolling landscapes, facilitating easier movement and visibility.

In contrast, a steep slope involves a rapid change in elevation, which makes it challenging to navigate. Concave and convex slopes describe the curvature of the terrain rather than the incline's steepness or gentleness. A concave slope curves inward, while a convex slope bulges outward. These shapes can still be steep or gentle depending on their specific angles, but they do not inherently denote a gradual incline. Thus, the gentle slope is correctly identified as the type with a gradual incline.