What are the two top white varieties planted in southern France?

The correct answer highlights Chardonnay and Sauvignon Blanc as the two top white grape varieties planted in southern France. Both varieties are widely cultivated and play significant roles in the wine production of the region. Chardonnay is renowned for its versatility and compatibility with various terroirs, making it a favored choice among winemakers across southern France. Its ability to produce a range of styles, from crisp and mineral wines to those that are rich and oaky, contributes to its widespread popularity.

Sauvignon Blanc, on the other hand, is celebrated for its aromatic profile and vibrant acidity, which are particularly well-suited for the warm climate of southern France. It thrives in a range of soils and often exhibits flavors of citrus, green herbs, and tropical fruits, making it another favorite for a variety of wine styles.

The other varieties listed do have significance within certain regions of southern France, but they do not reach the same level of prominence in terms of total acreage planted. Roussanne and Marsanne are important varieties, particularly in the Rhône Valley, while Chenin Blanc and Sauvignon Gris are less commonly associated with the southern regions. Thus, Chardonnay and Sauvignon Blanc are rightly recognized as the leading white grape varieties planted in that area.