What is it called when magma turns into a igneous rock under the crust?

Which search pattern would be best suited for a crime scene where many investigators are available to search a large area? a. spiral b. grid c. line d. zone

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.

What are the answers for the following questions?