Which of the following wines is categorized under white wine?

Chardonnay is categorized as a white wine because it is made from green-skinned grapes, which are harvested and fermented without the skins. This method of production allows the resulting wine to exhibit characteristics typical of white wines, such as a lighter body, fruitier flavors, and a refreshing acidity. Chardonnay can range from crisp and citrusy to rich and buttery, depending on the region where it is grown and the winemaking techniques employed.

In contrast, the other wines listed, like Malbec, Shiraz, and Merlot, are all made from red-skinned grapes and are classified as red wines. These wines derive their color and many of their flavor profiles from the skins during fermentation, which is not the case with Chardonnay.