Envoys were appointed for specific missions with a specific set of instructions; and the type of the diplomatic envoys varied according to the circumstances. They can be simple messengers who carry royal mail, but they can also be plenipotentiary ministers. Diplomatic envoys were chosen from among senior officials of administration. Their primary function involved coordinating diplomatic efforts. Some of them were regarded explicitly as the king’s personal representatives. Diplomatic envoys were protected by their diplomatic status and they were free to journey across boundaries even in times of crisis. In other words, they had a kind of “diplomatic immunity” which was evident in many documents that found in Mari and later in other archives. Even to attest their status, diplomats seemed to have a kind of “diplomatic passport”, on which the name of the holder, the description of his delegation and his destination were written. The correct answer is Choice B.