Which of the following complies with commonly accepted amateur practice when choosing a frequency on which to initiate a call?

Voluntary band plans are established by amateur radio organizations to organize the bands and prevent different operating modes (like SSB, CW, and digital) from interfering with one another. Following these gentlemen's agreements is the standard, accepted practice. While listening before transmitting is a crucial practice, a rigid rule of listening for 'at least two minutes' is not a universally mandated or standard requirement. Likewise, transmitting your call sign three times to initiate a call is unnecessary overkill. Because the distractor options contain arbitrary, non-standard rules, the 'All these choices are correct' option is invalid.