Which selection is least desirable according to the USDA grading system?

The USDA grading system for meat evaluates various factors such as the quality, tenderness, and the amount of marbling present in the product. Selections No. 1 represent the highest quality with the best flavor and tenderness, followed by No. 2 and No. 3. As the numbers increase, the quality and desirability typically decrease. Selection No. 4 is considered the least desirable in this grading system, as it reflects the lowest quality with the least marbling, leading to a tougher and less flavorful product.

In this context, while Selection No. 3 is of lower quality compared to No. 1 and No. 2, it is still more desirable than Selection No. 4. Thus, when considering the grading system, Selection No. 3 is not the least desirable, reinforcing that Selection No. 4 represents the lowest standard of quality as defined by the USDA.