What is the main red grape variety of Burgundy, France?

The primary red grape variety of Burgundy, France, is Pinot Noir. This grape is renowned for its ability to express the terroir of the region, leading to wines that exhibit a range of flavors and aromas, from red fruits like cherry and raspberry to earthy, floral, and spicy notes as the wines age. Burgundy is known for its strict appellation system and has a long history of producing high-quality wines predominantly from Pinot Noir in the Côte d'Or, which includes some of the most prestigious wine producers in the world.

The other varieties listed do not play a significant role in the wines of Burgundy. Grenache is more commonly associated with regions such as the Southern Rhône and parts of Spain; Cabernet Sauvignon is predominantly grown in Bordeaux and various New World regions, while Syrah is known for its prominence in the Northern Rhône and regions like Australia. Thus, it is Pinot Noir that stands out as the hallmark grape of Burgundy, making it the correct answer.