Which category of changes includes preparedness for unforeseen events?

The category of changes that includes preparedness for unforeseen events is contingency plans. Contingency plans are specifically designed to respond to unexpected situations, allowing an organization to minimize disruption and effectively manage crises or emergencies. These plans involve identifying potential risks and outlining strategies to address them, ensuring that the organization can maintain operations and protect its assets in times of uncertainty.

In contrast, improvement changes typically focus on enhancing existing processes, products, or services rather than addressing unforeseen events. Scope change refers to modifications in the boundaries or deliverables of a project, which may not directly relate to preparedness for unforeseen events. External events could encompass a range of factors, including market changes or natural disasters, but the term is too broad and does not specifically highlight the proactive measures associated with contingency planning. Therefore, contingency plans are the most appropriate choice when discussing preparedness for unforeseen events.