Help the stressed student make a polite but firm request to their noisy roommate by choosing the correct verb form.

"Hey, I'm trying to study for my Advanced Potato History exam. Would you mind _____ the music down a bit?"

The correct answer is turning.

When making a polite request using the phrase "Would you mind...", it must always be followed by a gerund (an -ing verb). Using the infinitive ("to turn") or the base form ("turn") is grammatically incorrect.