Oscar is looking for a new job. He used to be the company's top sales representative and was eagerly expecting to be promoted. However, one of the regional manager's friends was promoted to district manager instead. According to the expectancy theory, Oscar's dissatisfaction with his current job stems from a breakdown in the $\_\_\_\_\_\_\_\_$ relationship.

performance$-$reward

satisfaction$-$effort

reward$-$personal goal

effort$-$performance