E4D01:What is meant by the blocking dynamic range of a receiver?

Direct answer summary (2024-2028 NCVEC pool)

The official correct answer for E4D01 is The difference in dB between the noise floor and the level of an incoming signal that will cause 1 dB of gain compression.

The key fact is The difference in dB between the noise floor and the level of an incoming signal that will cause 1 dB of gain compression. Match that fact to the exact condition in the question; the other choices describe a different rule, band, component, or operating situation.