Which of the following terms means to debase morally?

The term that means to debase morally is "deprave." This term specifically refers to the act of corrupting or damaging someone's moral integrity or principles. It implies a decline from a state of virtue, leading to a negative transformation in character or behavior. When something is described as depraved, it indicates that it has been morally twisted or perverted, making it fundamentally flawed or wrong.

In contrast, terms like "uplift," "enhance," and "refine" suggest improving, elevating, or purifying something, which is the opposite of debasing. Uplifting and enhancing involve raising moral or ethical standards, while refining implies making something better or more pure. Thus, these choices do not align with the meaning of debasing morally, reinforcing that "deprave" is the correct answer.