Choice "B" is correct. All of the factors listed in the various choices are important for disaster recovery, but this question asks for the "most complete" disaster recovery plan. Any disaster plan must include an alternate processing site (of some kind), backup (of some kind) of programs and data, and a test of the plan. Normally, there must be some identification of critical applications; although, it is certainly possible in certain situations for "all" applications to be considered critical. This choice contains all of the required factors and is, thus, the best choice. Choice "d" is incorrect. A vendor contract for an alternate processing site is normally included in a disaster recovery plan; however, it is possible for an organization to use its own facilities so that an outside vendor is not necessary. The names of persons on the disaster recovery team are not essential; the individuals involved could be identified by position and not by name. Also, testing of the plan must be included in the disaster recovery plan, and it is not in this choice.Choice "a" is incorrect. A disaster recovery plan has to include some sort of alternate processing site, and this choice does not include that factor. In addition, backup is missing. Offsite storage tends to imply backup (since there has to be something to store offsite), but backup is not specifically included. So this choice is thus not as good as choice "B".Choice "c" is incorrect. An alternate processing site, backup, and testing are not included in this choice.