According to expectancy theory, people will not engage in motivated behavior unless three things are true. first, they must value the expected rewards, and second they must believe their efforts will lead to performance. what is the third requirement for motivated behavior?

They must believe that their performance must result in the desired rewards.

Explanation:

According to a different source, these are the options that come with this question:

These are the three requirements for motivated behaviour according ro expectancy theory. Expectancy theory suggests that an individual will act in a particular way because he is motivated to follow a certain behaviour in order to get the results that the behaviour brings. This means that the behaviour is selected because of the outcome it will bring.

The third  is that the rewards are attractive and valuable.

Expectancy Theory argues that the strength of our motivation to act in a specific way depends on the strength of three relationships.

Expectancy: Effort - Performance (E→P)

Instrumentality: Performance - Outcome (P→O)

Valence: V (O)

the answer to your question is,

d. when a child was born.

-mabel < 3