Which two DOCs are known for Corvina-based blends?

The choice referring to Valpolicella DOC and Valpolicella DOC Classico is the correct answer because both of these Denominazione di Origine Controllata (DOC) regions are renowned for wines primarily made from the Corvina grape, which is a key varietal in the blends produced in this area.

Valpolicella wines typically showcase a blend that includes Corvina alongside other grapes such as Rondinella and Molinara, with Corvina contributing to the wine's structure, acidity, and distinguishing cherry flavors. Valpolicella Classico represents the historical heart of the Valpolicella region, where the vineyards are often situated on the hillside slopes, and this area is known for producing high-quality expressions of the blend.

In contrast, the other DOCs mentioned, such as Barolo and Chianti or Brunello di Montalcino and Barbaresco, focus on entirely different grape varieties like Nebbiolo and Sangiovese, respectively. Similarly, Montefalco Sagrantino and Rosso di Montepulciano DOC are linked with Sagrantino and Sangiovese grapes. Therefore, focusing on Corvina, Valpolicella and its Classico designation distinctly align with the correct choice