Final answer:
Brett's actions and beliefs are aligned with the 'expectancy' element of expectancy theory; his confidence in achieving goals and expected promotion illustrate his understanding of the link between effort and performance.
Step-by-step explanation:
Brett believes that by completing all his assigned tasks well before their established deadlines and controlling costs in his area, he will be promoted. This belief aligns with expectancy theory, which suggests that individuals will behave in a certain way if they expect that their behavior will lead to a desired outcome.
In Brett's situation, the element of expectancy theory that best matches his phrase is the 'expectancy' component, which represents the belief that one's effort will result in the desired level of performance. The phrase illustrating this is 'completing all his assigned tasks well before their established deadlines.'