Final answer:
Mark seeks to increase his perceived equity by finding a new job with better pay, thus aiming to balance the perceived disparity in compensation compared to his colleagues.
Step-by-step explanation:
Mark's actions are an attempt to increase his perceived equity. Equity theory suggests that when employees feel undercompensated, they are motivated to take actions to restore balance, such as seeking a job with better pay. By quitting his job for a better offer at a larger company, Mark is trying to achieve what he perceives as fair compensation compared to his colleagues, and thus, is trying to rectify what he feels is an inequitable situation.