What are the three key white grape varieties in Austria?

Grüner Veltliner, Welschriesling, and Riesling are indeed the three key white grape varieties in Austria, making this the correct choice. Grüner Veltliner is particularly important, widely recognized for its versatility and ability to produce a range of styles from light and crisp to full-bodied and expressive. It is the most planted grape in Austria and is known for its peppery notes and vibrant acidity.

Welschriesling, while less known internationally, plays a significant role in Austrian wine production, often used for producing fresh, fruity wines that can be enjoyed young as well as late-harvest styles. Riesling in Austria is also highly esteemed and capable of producing exceptional quality wines, especially in regions like Wachau and Kamptal, characterized by their floral aromas, high acidity, and ability to reflect the terroir.

The other options do not accurately represent the key white grape varieties in Austria. For example, Pinot Grigio and Sauvignon Blanc are more recognized for their roles in other countries, while varieties like Chenin Blanc and Gewürztraminer are not central to Austrian viticulture. Similarly, Semillon, Verdello, and Trebbiano are predominantly associated with other regions and styles, making them less relevant