When can policy revisions typically be expected to occur?

The correct answer is based on the understanding that policy revisions are often necessitated by changes in external factors, notably legislation or regulatory requirements. When new laws are enacted or existing regulations are modified, it is crucial for policies to be updated to ensure compliance and to reflect current legal obligations. This kind of prompt revision helps organizations remain aligned with statutory requirements and mitigates any potential legal risks.

On the other hand, while public consultations and employee suggestions can certainly influence policy revisions, they are usually part of a broader review process and not the primary trigger. Revising policies every two years regardless of changes may not be practical or necessary, as it could lead to wasted resources if no significant changes or updates are required during that period. Therefore, the direct link between legislative or regulatory changes and the need for policy updates underscores why this answer is the most appropriate in this context.