E4E09:What undesirable effect can occur when using a noise blanker?

Direct answer summary (2024-2028 NCVEC pool)

The official correct answer for E4E09 is Strong signals may be distorted and appear to cause spurious emissions.

The key fact is Strong signals may be distorted and appear to cause spurious emissions. Match that fact to the exact condition in the question; the other choices describe a different rule, band, component, or operating situation.