Final answer:
Not all drives are dependent on one another nor do they always form a clear hierarchy, as drives can influence behavior independently and do not strictly adhere to a hierarchical structure.
Step-by-step explanation:
The statement "Drives are dependent on one another; they form a sort of hierarchy with clearly defined relationships." is somewhat founded in psychological theory, specifically in reference to theories such as Maslow's hierarchy of needs. However, in a strict sense, the statement can be false. Not all drives are dependent on one another nor do they all fit neatly within a hierarchy. Drive theory in psychology suggests that drives influence behavior, but they are not necessarily dependent on one another to activate or influence motivations and do not always form a fixed hierarchy. For example, someone might seek social interaction (a higher-level drive according to Maslow) even if their basic needs like hunger (a lower-level drive) aren't entirely met.