What does a 'risk tier' represent in a GIS-based risk assessment?

• A. A classification of assets or locations by their probability and consequence, used to prioritize mitigation actions.
• B. A color palette for map visuals.
• C. A calendar quarter used for budgeting.
• D. A regulatory compliance category only.

Answer: (A)

Risk tier represents a way to classify assets or locations by combining how likely a risk event is with how severe its impact would be, then grouping those into levels (tiers) to guide action. In a GIS-based assessment, you assign probability and consequence values to each asset or site, translate those into tiers (like low, medium, high), and map them so you can see spatial patterns. This ranking tells you where to prioritize mitigation, allocate resources, and focus monitoring and response efforts. Colors on a map may visualize the tiers, but the core idea is the risk ranking that informs decisions, not just visuals, a calendar period, or regulatory categories.