Which of the following is a key wine region in Trentino-Alto Adige?

Trentino is indeed a key wine region in Trentino-Alto Adige, which is located in the northern part of Italy. This region is known for its diverse wine production, influenced by its unique geographical and climatic conditions. The area benefits from a combination of Alpine and Mediterranean climates, leading to a variety of grape varieties that thrive there.

Trentino, specifically, is recognized for producing high-quality white wines, particularly from the Pinot Grigio and Chardonnay grapes, as well as notable reds such as Teroldego and Lagrein. The region's commitment to quality and sustainable practices in viticulture has also helped elevate its status in the wine world.

In contrast, the other regions mentioned — Piedmont, Tuscany, and Lombardy — while significant in their own right, are not part of Trentino-Alto Adige. Piedmont is renowned for Barolo and Barbaresco, Tuscany is famous for Chianti and Brunello di Montalcino, and Lombardy is known for wines like Franciacorta and Valtellina. Each of these regions has its own distinct terroir and wine styles, separate from the offerings found in Trentino.