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G3C01:Which ionospheric region is closest to the surface of Earth?

G3C01G3C

Which ionospheric region is closest to the surface of Earth?

Direct answer summary (2023-2027 NCVEC pool)

The official correct answer for G3C01 is The D region.

The key fact is The D region. Match that fact to the exact condition in the question; the other choices describe a different rule, band, component, or operating situation.

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