Which grape variety is NOT commonly associated with Armagnac production?

Chardonnay is not commonly associated with Armagnac production, making it the correct choice in this context. Armagnac, primarily produced in the Gascony region of France, is made predominantly from specific grape varieties that are well-suited to the unique terroir and climate. The main grapes used in Armagnac production include Ugni Blanc, Colombard, and Baco Blanc, which contribute to the distinctive flavors and characteristics of the spirit.

Ugni Blanc is particularly favored due to its high acidity and ability to produce crisp, clean distillates, while Colombard offers fruity and floral notes. Baco Blanc, a hybrid variety, is often included for its richness and complexity. Chardonnay, on the other hand, is more closely associated with the production of Champagne and still white wines in regions like Burgundy. While it can contribute to wine production, it is not a traditional grape variety for Armagnac, reinforcing why it is the option that stands out in this question.