Content theories of motivation a) are explanations that emphasize peoples' internal characteristics b) are explanations that emphasize how individuals are motivated c) include the needs-goal theory and the vroom expectancy theory of motivation d) include skinner's work on behavior modification e) can collectively be used to identify all human needs

A) are explanations that emphasize peoples' internal characteristics                                  

Explanation:

Content theory: The content theory is defined as the phenomenon that explains or demonstrate the reason behind the change in human needs with time. The content theory involves the works of Abraham Maslow, David McClelland, and other psychologists because they have attempted to describe the reason behind an individual's needs change yet not the process of this change.

In the question above, content theories of motivation are explanations that emphasize peoples' internal characteristics.

a is your answer hope this ! : )