Final answer:
The group that Justin belongs to at work, with the mission to resolve customer service problems, is an example of a problem resolution group.
Step-by-step explanation:
The group that Justin belongs to at work, comprised of five members from various departments, with the mission to resolve customer service problems in the organization, is an example of a problem resolution group. Problem resolution groups are created for the purpose of solving a particular problem or issue. In this case, the group is specifically focused on addressing customer service problems.