The correct option is The expected severity of the risk to the organization's operations and assets.

Prioritizing The expected severity of the risk to the organization's operations and assets ensures that safeguards are chosen to reduce the greatest potential harm to mission critical functions and valuable assets. This approach directs limited resources toward controls that prevent or mitigate events that would cause the most serious damage even when those events are not the most likely to occur.

The probability that the risk will materialize is important for assessing risk but it is not the top priority when the goal is to reduce the most serious threats. Likelihood helps refine prioritization but high impact events deserve primary attention.

How smoothly the safeguards integrate with current systems is a practical consideration for implementation and operations. Integration affects feasibility and downtime but it should not outweigh the need to address risks that could severely harm the organization.

The implementation cost of the safeguards is a valid constraint and must be considered during selection and planning. Cost alone should not drive the choice when a control is needed to protect against very severe risks.

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