The theory that states 'pieces of the Earth's crust are in constant, slow motion driven by movement in the mantle' is called:

उत्तर: (C) the theory of plate tectonics

• (A) चूक

  Wrong: Wegener's theory lacked a mantle-driven mechanism.

• (B) चूक

  Wrong: Pangaea is a supercontinent, not a theory of motion.

• (C) बरोबर

  Correct: plate tectonics explains lithospheric plates moving over the mantle.

• (D) चूक

  Wrong: not a recognised theory.