To make a call to another vessel requesting voice communications regarding important company business, the GMDSS operator should:

Correct Answer: Option D — None of the above

Routine calls for business must use 'Routine' priority. The correct emission for voice is J3E, not F1B or J2B, which are used for data. Furthermore, the DSC call must specify the other vessel's MMSI, not the own ship's MMSI, making all provided options technically incorrect for this specific operational requirement.