Absences must be approved by whom?

The correct choice is the basic training sergeant, as approval for absences typically falls under the purview of someone directly responsible for managing trainees and overseeing their progress. In a structured training environment, this role is crucial for maintaining discipline and ensuring that all trainees are adhering to the schedule and curriculum set forth by the training program.

The basic training sergeant has the necessary authority and insight into the day-to-day operations of the training program, which includes monitoring attendance. This individual can assess whether an absence is justified and make decisions based on the training needs and protocol.

Other roles, such as the Chief of Police or training coordinator, may have broader oversight responsibilities but are less involved in the daily management of training sessions and individual trainee schedules. A senior officer might have experience and authority but would typically defer to the basic training sergeant regarding trainee absences, ensuring that the proper chain of command is followed.