How does alcohol impact the flavor profile of a wine?

The correct answer highlights how alcohol levels influence the body of the wine. Alcohol contributes to the perception of weight or body in a wine; wines with higher alcohol content typically feel fuller and heavier, while those with lower alcohol levels are perceived as lighter. This sensation is often important for pairing with food, where a lighter-bodied wine might complement certain dishes better than a heavier one.

In contrast, while other options mention aspects of flavor perception, they do not accurately convey the direct relationship between alcohol content and the body of wine. For example, alcohol does not inherently make wines taste fruitier or enhance acidity; those characteristics depend more on the grape variety, winemaking techniques, and the environment in which the grapes are grown. Additionally, alcohol does not always mask other flavors, though high levels can overshadow more delicate notes. Thus, the impact of alcohol primarily revolves around the overall body and mouthfeel of the wine.