What distinguishes DOCG wines from regular DOC wines?

DOCG wines, or Denominazione di Origine Controllata e Garantita, are distinguished from regular DOC (Denominazione di Origine Controllata) wines primarily by their stricter regulations and quality controls. The DOCG designation is the highest level of wine classification in Italy, ensuring that the wine not only meets the standards set for DOC wines but also adheres to more rigorous criteria regarding production methods, grape quality, and aging requirements.

This includes stringent assessments of the wine, such as tasting panels and chemical analyses, before it can be labeled as DOCG. Additionally, DOCG wines often come from specific, renowned regions and require adherence to traditional production methods that contribute to their unique characteristics and quality.

While geographic location and grape varieties can also play a role in distinguishing different types of Italian wines, the hallmark of DOCG wines is their commitment to high standards of quality and regulatory oversight, making option C the correct choice.