Which of the following offers the SIMPLEST overview of changes in an organization's risk profile?

A risk roadmap outlines the planned activities and strategies to manage risks over time, which is more detailed than a simple overview of changes.

A balanced scorecard typically tracks key performance indicators across multiple perspectives (financial, customer, internal process, learning and growth) and is broader than just risk profile changes.

A risk heat map visually represents risks, typically by plotting likelihood against impact, and often uses color-coding to highlight the most critical risks. Its graphical nature makes it very effective for quickly showing the current state of risks and how they might have changed over time, offering a simple and intuitive overview of the overall risk profile.

The risk register is a detailed document listing all identified risks, their attributes, and mitigation efforts, which is comprehensive but not the simplest visual overview.