Expectancy theory advocates that: a) workers should be given challenging, creative tasks so that they push themselves harder to perform better. b) employees will continue to perform only if they believe that their efforts are recognized. c) employees should be punished if they consistently perform poorly. d) workers will not be motivated if their reward is lower than the rewards of other workers for the same amount of work.

b) employees will continue to perform only if they believe that their efforts are recognized.

Explanation:

Expectancy theory emphasizes that an individual is more likely to behave  certain way or perform one's duties when their actions will be give a desirable outcome.

Expectancy theory is when an individual is motivated to carry out a certain duty as a result of what they expect or think  that duty to result into, for instance a reward.

For example, the motivation to work in a particular organisation can be dependent on what is the perceived relationship between work performance and anticipated outcomes. So a worker can be motivated to a duty because the worker anticipates a salary and bonus for performing that duty

i’m   sure probably just geuss and see which one you can get right, i’m pretty sure it is the combination of goods and services