What is the correct way to rewrite "You must study for the exam" using "needs to"?

The correct transformation of the sentence "You must study for the exam" using "needs to" is achieved by rephrasing it as "You need to study for the exam." This selection accurately conveys the necessity implied in the original statement while appropriately incorporating the phrase "needs to."

The phrase "must" expresses obligation, and "need to" serves a similar purpose, indicating that studying for the exam is necessary. Therefore, using "need to" provides an equivalent meaning without altering the intended message.

Other options may include different modalities of obligation or necessity that do not align with the request to specifically use "needs to." These variations could confuse the original requirement and fail to maintain the focus on the phrase in question.