A(n) _____ is a tool that is used to document, monitor and track problems that need resolution.

The answer is "Issue Tracking System". This tool is used to document, monitor, and track problems that need resolution. It is commonly used in fields like software development, customer support, and project management. The system allows users to report issues they encounter, which are then logged into a database. The issues can be assigned to specific individuals or teams to resolve. The system also allows for the tracking of the progress of the resolution, and keeps a record of past issues for future reference.