Answer:
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.