What is the literal translation of quid pro quo?

The phrase "quid pro quo" literally translates to "something for something" or "this for that." In Latin, "quid" means "what," and "pro" means "for," while "quo" means "that" or "which." Therefore, it conveys the idea of an exchange where one thing is given in return for another.

Both "what for what" and "this for that" accurately encapsulate the fundamental meaning of the phrase, emphasizing the concept of mutual reciprocation. The correct answer effectively encompasses multiple interpretations that align with the essence of "quid pro quo," making options that convey similar meanings as part of the justification for selecting the combined answer.