Question

1. which process is responsible for the recycling of earths crust?

transform faulting
seafloor spreading
subduction
mountain building

Explanation:

Subduction is the process where one tectonic plate moves under another and sinks into the mantle. This recycles the Earth's crust as the sub - ducting plate is melted back into the mantle. Transform faulting is about horizontal movement between plates, seafloor spreading creates new crust, and mountain building is related to plate collisions that uplift crust rather than recycle it.

Answer:

Subduction