How is 1% milk prepared?

The preparation of 1% milk involves adjusting the fat content to reach a specific level of 1% milk fat. By combining 50% of 2% milk, which contains 2% milk fat, with 50% of nonfat milk, which contains no fat, the resulting mixture achieves the desired fat content of 1%. This method effectively dilutes the fat content while keeping the overall milk structure and nutritional value intact.

The other options suggest different combinations or processes that would not accurately result in 1% milk. For example, mixing whole and skim would create a different fat percentage than expected, while adding water to whole milk or mixing cream and water would lead to entirely different products that do not match the 1% fat content standard.