The doppler effect occurs for all types of waves
I would need to look at the map key, specifically the scale, in order to answer that question. It is different for each map.
The correct answer is - The rock cycle is driven by the movement of the tectonic plates.
The rock cycle can simply be taken as the formation, evolution and existence, and destruction of the rocks. This cycle is a result of the movement of the tectonic plates. Most of the new rocks form on the divergent boundaries, where the magma creates new crust, the ones that are between the boundaries are the rocks that are in their evolution faze, and the rocks that are finding into a situation to be at the convergent boundaries are getting destroyed as they get into the mantle layer.
