Iwill mark brilliant. do 7 through 9

7)The circular motion of the mantle shift the lithosphere and crust move around.

8) Magnets create an invisible magnetic field. It pulls other metals such as iron, nickel and cobalt.

9)The compass points up north, this can help people travel by letting people know their relative location, and right their courses. 

The answer is c : ) hope this answered your question!