Which of the following is not a category listed among the winners?

The correct answer, "Advanced Crop Science," is not a category listed among the winners in FFA competitions. FFA contests typically focus on various areas of agricultural education, including environmental sciences, horticulture, and animal products. Categories like "Environmental and Natural Resources," "Floriculture," and "Milk Quality and Products" represent well-established fields within agricultural studies that have specific contests and awards associated with them.

The absence of "Advanced Crop Science" signifies that this specific area may not have its distinct competitive framework within the current FFA competitions. This distinction highlights how the FFA organizes and categorizes agricultural education and competition, ensuring that it encompasses a broad range of relevant topics while focusing on those deemed most impactful for the members' development and learning in agricultural practices.