Which of the following is good amateur practice for net management?

Net operations rely on efficient and reliable communication. Because amateur bands are shared and propagation can change rapidly, interference (QRM) or atmospheric noise (QRN) can render the primary net frequency unusable at any moment. Good net management requires establishing a backup frequency so that all participants know exactly where to regroup if the primary frequency fails. Distractors like reading the full roster waste valuable airtime, and using multiple phonetic alphabets creates confusion rather than clarity.