What defines the term "full-bodied" in relation to white wine?

The term "full-bodied" when describing white wine primarily refers to a combination of high alcohol content and rich texture. Full-bodied wines typically have a weight and viscosity on the palate that gives a perception of richness. This can occur due to a higher alcohol level, which adds to the mouthfeel, making the wine feel heavier and more robust. In addition, a full-bodied white wine often has malolactic fermentation or oak aging, contributing to a creamy or buttery texture, further enhancing its richness.

The other aspects mentioned in the incorrect answers do not align with the concept of body in wine. Sweetness is more about the residual sugar in the wine, while floral aromas are linked to the aromatic profile rather than the body. Aged wines can vary widely in body irrespective of their aging period, so a shorter aging does not inherently define a wine as full-bodied. Thus, the characteristics of having high alcohol content and a rich texture are what accurately encapsulate what "full-bodied" refers to in white wines.