A problem model documents the steps needed to manage a specific type of problem, including how third parties contribute to resolving it. While third parties may assist in identifying and investigating problems or providing workarounds, contributing to the development of the problem management practice is not typically included in a problem model. Problem models are focused on the operational aspects of managing recurring issues, rather than the broader development of practices. Third-Party Contributions: Problem models are designed to document how third parties assist in resolving specific types of problems (e.g., helping with investigations, logging problems, or providing workarounds). These models focus on practical, actionable contributions directly related to problem resolution.
Option C ("How the third party helps to develop the problem management practice") is the correct answer because problem models do not typically include strategic contributions to the overall practice; they focus on operational activities.