Sal is very clear in defining for his subordinates the incentives available to them for different levels of performance. He makes sure they understand the path toward receiving incentives and follows through on rewarding them when they meet those goals. Sal exhibits the theory of leadership.

d. path–goal

Explanation:

The Path-goal theory of leadership espouses that leaders should be dynamic and use whichever leadership style would be best suited to the abilities of their subordinates and the work environment that they are in.

It is then divided into four styles with the relevant style here being the "directive path-goal clarifying leader behavior". Under this style, the manager specifies exactly what it is that they want from the employees and then rewards them when they meet the required objectives.

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