Which of the following is an example of a work unit?

A work unit is defined as a specific, measurable task that contributes to the completion of a larger project or goal. In this context, changing a tire is a clear example of a work unit because it involves a distinct and defined activity that can be completed independently and measured in terms of completion time, quality, and outcome. It is a straightforward task that achieves an immediate result in a work setting, particularly in industries such as automotive service.

In contrast, the other options are broader concepts that do not represent discrete tasks on their own. Cost calculation involves a series of steps and considerations, making it more of a process than a singular work unit. Workshop planning consists of several tasks that must be coordinated and does not refer to a single measurable output. Similarly, participant feedback is input or data rather than a specific action or task that can be performed independently. Thus, the nature of changing a tire makes it the most fitting example of a work unit.