"य" इत्यस्य वर्णस्य उच्चारणस्थानम् अस्ति –

उत्तर: (C) तालु — य is a तालव्य (palatal) sound — produced with the tongue touching the hard palate. Palatal sounds include: इ, ई, च, छ, ज, झ, ञ, य, श. This classification is from Panini's Shiksha.