Final answer:
A manager assessing if workers' performance meets quality standards is performing the controlling function of management to ensure organizational goals are met efficiently and effectively.
Step-by-step explanation:
When a manager monitors the work performance of workers in their department to determine if the quality of their work is "up to standard," they are engaging in the controlling function of management. This involves measuring performance, comparing it against established standards or goals, and taking corrective action if necessary. The aim of this function is to ensure that organizational goals are met in an effective and efficient manner.