Answer:
Physiological needs
Explanation:
Abraham Maslow developed the need hierarchy theory of motivation. As per him, the urge to fulfill a need by an individual serves as primary factor of motivation.
Maslow specified the following needs in their order of hierarchy i.e from lowest to highest:
In the given case, the vendor pays it's employees a higher wage than the minimum wages. These wages would help employees satisfy their basic physiological needs as conveyed by the term, "living wage".