2-38. How detailed a standard operating procedure (SOP) is depends on which of the following  factors? 1. The state of training 2. The complexity of the instructions 3. The size of the command 4. Each of the above 4-39. What type of message is destined for two or more addressees, none of whom is informed of any other addressee? 1. Book 2. General 3. Multiple-address 4. Single-address 4-40. What type of message has a wide, predetermined, standard  distribution? 1. Book 2. General 3. Multiple-address 4. Single-address 2-41. How can four-letter address groups  be  distinguished  from Navy  four-letter international  radio  call signs? 1. Address  groups  are transmitted with a hyphen between the first and second letters 2. Address  groups  are transmitted with a hyphen between the third and fourth letters 3. Address  groups  are always  transmitted  twice 4. Address groups do not begin with the letter N 4-42. What type of address group must always have more information added to it to serve as a complete station and  address  designator? 1. Individual  activity address  group 2. Collective  address  group 3. Conjunctive  address group 4. Address  indicating  group 4-43. What  always  precedes geographic  address  groups? 1. Individual  activity address  groups 2. Collective  address groups 3. Conjunctive  address groups 4. Address   indicating groups 4-44. What is the purpose of address  indicating  groups (AIGs)? 1. 2. 3. 4. To reduce the number of address  groups  required in the heading of a message To convey special instructions in the heading of a message To provide an alternate address group in the event that the primary address group is compromised To  locate  the  originator of a message geographically 4-45. A single address group that represents a set of four or more    activities,    including the  cognizant  authority,  is known by what term? Conjunctive  address 1. group 2. Collective  address  group 3. Collective  address desiqnator 4. Call-sign 15