Final answer:
Refresher training frequency can vary, but the generally recommended practice is annual training to ensure staff remain familiar with their duties, with more frequent training for dynamic or high-risk environments.
Step-by-step explanation:
The frequency of refresher training sessions for staff to familiarize them with their duties pursuant to the plan can vary depending on the organization and the nature of the work. However, there are general guidelines that can be offered:
Refresher training every 6 months (Option A) is generally recommended for highly dynamic industries where changes occur frequently, or in high-risk environments where safety is a major concern.
Annual refresher training (Option B) is suitable for most organizations to ensure knowledge is up-to-date and to address any changes in policies or procedures that may have occurred during the year.
Refresher training every 2 years (Option C) might be considered for roles with minimal changes or risk.
Training only when there are significant changes (Option D) could apply to very stable roles where updates to duties and responsibilities are rare.
In the absence of a specific context for the question, the most prudent and commonly recommended frequency for refresher training is usually annually, unless there are industry-specific regulations or standards that dictate otherwise.