Final answer:
The HR manager should review incident reports for the last 12 months to determine patterns and identify common factors or trends that contribute to the increase in incidents.
Step-by-step explanation:
The HR manager should take approach B, which is to review incident reports for the last 12 months to determine if there are patterns.
By reviewing incident reports, the HR manager can identify common factors or trends that contribute to the increase in incidents. This may include specific activities, equipment, or areas where incidents frequently occur. Identifying and addressing these patterns can help in implementing targeted interventions to improve safety and reduce future incidents.