Final answer:
The USDA unveiled organic standards for foods and the official organic seal in 2002.
Step-by-step explanation:
The USDA unveiled organic standards for foods and the official organic seal in the year 2002. The development of these standards was a significant milestone in the organic food movement, as it provided clear guidelines for farmers and consumers regarding the production and labeling of organic foods. The official organic seal helps consumers easily identify and choose organic products that meet the USDA's requirements.