Which of the following could BEST be described as "A decision support and planning tool that projects the likely consequences of a business action"?

A Problem model is a predefined set of steps for handling a specific type of recurring problem, not a planning or decision support tool.

A Service Improvement Plan (SIP) is a formal plan documenting the actions required to improve a service or process, not a tool for projecting consequences of a business action.

A Request for Change (RFC) is a formal proposal submitted to Change Management to make a specific change, not a decision support or planning document.

A Business Case is defined in ITIL as a decision support and planning tool that projects the likely consequences of a business action, used to justify investment in terms of costs, benefits, and risks. It is formally created during Service Strategy to obtain authorization for new or changed services and is distinct from operational or change management artifacts.