Final answer:
HR should use a collaborative approach with leaders to create and communicate a company-wide protocol that outlines steps to take in an emergency situation.
Step-by-step explanation:
The action that HR should take to ensure that supervisors act appropriately in emergency situations without violating employee privacy is option C: Use a collaborative approach with leaders to create and communicate a company-wide protocol that outlines steps to take in an emergency situation.
This approach ensures that supervisors have clear guidelines in place for handling emergency situations, which helps them make informed decisions without violating employee privacy. By involving leaders and creating a company-wide protocol, HR can ensure consistency and accountability in how emergency situations are handled.