Which grape is considered one of Tuscany's primary red varieties?

The grape that is considered one of Tuscany's primary red varieties is not Syrah, but rather Sangiovese. Sangiovese is the backbone of many famous Tuscan wines, including Chianti and Brunello di Montalcino. This varietal thrives in Tuscany's climate and soil, producing wines that are known for their vibrant acidity, cherry flavors, and earthy undertones, which are characteristic of the region's terroir.

Regarding the other choices, Fiano and Verdicchio are white grape varieties primarily associated with Southern and Central Italy, particularly in regions like Campania and Marche, respectively. Merlot, while a significant grape variety in many wine regions around the world, is not a primary grape in Tuscany but is more commonly associated with Bordeaux. This context highlights that Sangiovese stands out as the quintessential grape for Tuscany, making it a fundamental part of the region's wine heritage and identity.