Joie De Vivre Hotels of San Francisco saw a sharp reduction in turnover and skyrocketing employee satisfaction after implementing a radical employee reward and recognition program. High-performing team members are gifted with prizes ranging from a month-long sabbatical after three years of service to a "Dream Maker" contest that subsidises an outstanding employee's long-held wish or aspiration.

Required: Briefly describe the following theories of motivation, and use them to explain the positive motivation associated with the reward and recognition program implemented by Joie De Vivre Hotels.

(a) Expectancy theory

(b) Herzberg's two-factor theory

(c) Reinforcement theory

I need understand this question for final exam. Can someone answer this question?