Why are some wines considered to be "white"?

Wines are considered "white" primarily because they are made from the juice extracted from the pulp of the grapes, with little to no influence from the grape skins. This process is essential because the color of wine primarily comes from the pigments found in grape skins. In the production of white wine, the grapes are typically pressed quickly to separate the juice from the skins. This results in a lighter color and a different set of flavor profiles compared to red wines, which do involve fermentation with the skins.

While some choices mention the involvement of grape components, they do not accurately describe the process behind white wine production. The focus on juice extraction from the pulp alone delineates the characteristic traits of white wine, reinforcing why option B is the most accurate representation of why certain wines are classified as white.