Final answer:
The Chief of Operations must approve all company officer time trades within their district.
Step-by-step explanation:
The correct answer is D. Chief of Operations.
The Chief of Operations must approve all company officer time trades within their district. This individual is responsible for overseeing the day-to-day operations and ensuring that all activities are carried out according to company policies and guidelines.
For example, if an officer wants to trade shifts with another officer, they would need to submit a request to the Chief of Operations for approval. The Chief of Operations would review the request and make a decision based on factors such as staffing needs and scheduling conflicts.