Which one of the following is found in the innermost part of the Earth?

  1. A. Conrad discontinuity
  2. B. Moho discontinuity
  3. C. Guttenberg discontinuity
  4. D. Lehmann discontinuity

Correct Answer: D. Lehmann discontinuity

Explanation

The Lehmann discontinuity is located at the boundary between the Earth's liquid outer core and its solid inner core, making it the innermost of the given seismic discontinuities.

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