Rewrite the sentence "You can borrow my book if you return it" using "providing that".

The chosen response accurately employs "providing that" to convey a conditional relationship between borrowing the book and the requirement to return it. By stating "You can borrow my book providing that you return it," the sentence clearly delineates that the act of borrowing is contingent upon the condition that the book is returned.

This transformation maintains the original meaning, emphasizing that borrowing is allowed only if the specific condition of returning the book is fulfilled. The phrase "providing that" effectively introduces this condition, making it clear and direct.

The other responses, while conveying similar ideas, do not utilize "providing that" as required by the prompt. For instance, "as long as" and "on the condition that" express the necessary condition but do not incorporate the specified phrasing. The inclusion of "may" in some alternatives also shifts the tone slightly, implying permission rather than direct allowance, which can alter the emphasis of the original statement.