Which DO in northwest Spain is white only and made from the Albarino grape?

The correct answer is Rias Baixas DO, as it is indeed a designated area that focuses exclusively on white wines, predominantly crafted from the Albarino grape. This region, located in the northwest of Spain, is known for its cool, coastal climate and unique terroir, which contribute to the fresh and aromatic character of Albarino.

The Albarino grape thrives in this environment, producing wines that are celebrated for their bright acidity, floral notes, and stone fruit flavors. Rias Baixas DO encompasses several sub-zones that may emphasize particular styles or expressions of Albarino, but the overarching profile remains consistent: it is a white wine region with Albarino at its core.

The other options refer to regions primarily known for different types of wines. Bierzo DO, while it produces some white wines, is best known for its red wines, particularly those made from the Mencía grape. Toro DO is famous for its robust red wines primarily made from Tinta de Toro, a local variation of Tempranillo. Valencia DO, while it does produce both red and white wines, does not specialize exclusively in whites nor is it primarily associated with Albarino. This context reinforces the distinctiveness of Rias Ba