G2B03:What is good amateur practice if propagation changes during a contact creating interference from other stations using the frequency?
Direct answer summary (2023-2027 NCVEC pool)
The official correct answer for G2B03 is Attempt to resolve the interference problem with the other stations in a mutually acceptable manner.
The key fact is Attempt to resolve the interference problem with the other stations in a mutually acceptable manner. Match that fact to the exact condition in the question; the other choices describe a different rule, band, component, or operating situation.