The correct answer is: A. workers
Porter and Lawler model of motivation is a theory of motivation that suggests that motivation is a function of the relationship between effort, performance, and rewards. The theory states that employees will be motivated to perform well if they believe that their efforts will lead to high performance, and that high performance will lead to desirable rewards.
The model is primarily relevant to workers, as it is workers who are responsible for putting in the effort and performing the tasks that lead to organizational success. Managers and supervisors can play a role in motivating workers by creating a positive work environment and providing clear goals and expectations. However, the ultimate responsibility for motivation lies with the individual worker.
Option B, directors, is incorrect because directors are typically responsible for setting the overall strategy for an organization, rather than for motivating individual employees. Option C, managers, is incorrect because managers are typically responsible for overseeing the work of a group of employees, rather than for motivating individual employees. Option D, supervisors, is incorrect because supervisors are typically responsible for overseeing the work of a small group of employees, rather than for motivating individual employees.