What is the most accepted scientific explanation for the origin of the Earth's magnetic field?

  • A
    The presence of a large permanent magnet at the Earth's core.
  • B
    The rotation of the Earth causing the movement of molten iron and nickel in the outer core,known as the dynamo effect.
  • C
    The magnetic properties of the Earth's crust and mantle.
  • D
    The interaction between the Earth's atmosphere and solar wind.

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