Which geological feature is formed by convection currents in the mantle?

Convection currents in the mantle are responsible for the movement of tectonic plates. These currents occur due to the heat from the Earth's core creating a cycle of rising and sinking heated and cooled rock materials. As the mantle material heats up, it becomes less dense and rises towards the surface, while cooler material sinks. This continuous movement exerts force on the rigid tectonic plates above the mantle, causing them to shift, collide, or separate.

The movement of these plates can lead to various geological phenomena, such as the formation of mountains, earthquakes, and oceanic trenches. However, while tectonic plates result from the mantle’s convection currents, mountain ranges and other features are the result of the interactions between these plates, rather than a direct result of the convection process itself. Therefore, the formation of tectonic plates is directly linked to the convection currents in the mantle, making this the correct answer.