Does anyone know 2,3, and 4? I need help

What did the pattern of earthquakes in the wadati-benioff seafloor zones show scientists? a.) earthquakes occur where the ocean floor reaches its highest temperatures. b.) many earthquakes take place 700 kilometers below the seafloor. c.) slabs of ocean floor return to the mantle in subduction zones. d.) ocean - trenches cause earthquakes.

Based on the information in the graph, what can you conclude about humans in the world in general?

Asap will mark geography final plz ! what are the benefits of international aid? (give me the right evidence )