Final answer:
Sugar is added as one of the final steps in the Champagne process to balance acidity and provide sweetness in the final product.
Step-by-step explanation:
In the Champagne process, the addition of sugar is one of the final steps. After the yeast ferments and produces carbon dioxide, sugar is added to the wine to balance the acidity and provide sweetness. This process, known as the dosage, determines the level of sweetness in the final champagne.