What is the minimum grade for apples packed as "combination grade"?

The minimum grade for apples packed as "combination grade" is determined by the standards set for fruit grading, which allows for a mix of different grades within a single pack. The correct response indicates that the combination grade can include both fancy and extra fancy apples. This means that as long as the apples meet the minimum quality standards of either of these grades, they can be labeled under the combination grade. This is significant because it provides flexibility for distributors and retailers while maintaining a level of quality assurance for consumers.

In contrast, the other options imply that only one specific grade can be included in the combination pack, which does not align with the definition of a "combination grade." The essence of a combination grade is to provide a mixed collection that still adheres to a quality standard, thereby allowing for diversity in the types of apples included while ensuring a quality benchmark is met with respect to both fancy and extra fancy categories. This is a practical solution in the marketplace to accommodate various quality apples without compromising overall product standards.