A is a long, deep indentation (big hole) in the ocean floor that forms when two plates move together and one plate is pushed under the other plate. which one mid-ocean ridge, trench tectonic plate, or mantle

Which of the layers of the earth has the following three characteristics? i. it is a solid outer layer. ii. it is between 3 and 30 miles thick. iii. it is separated into plates. a. the outer core b. the inner core c. the mantle d. the crust