Which geological activity is common at both convergent (e.g., continental-to-continental) and divergent (e.g., oceanic-to-oceanic) plate boundaries?

Question

new crust formation
earthquakes
subduction
crust is re-melted and recycled into the Earth's mantle

Answer 1

The geological activity that is common at both convergent (e.g., continental-to-continental) and divergent (e.g., oceanic-to-oceanic) plate boundaries is earthquakes.

While divergent boundaries are characterized by the creation of new crust, convergent boundaries can involve processes like subduction and recycling of crust. However, earthquakes occur at both types of boundaries due to the movement of tectonic plates.