What information is required on shellstock identification tags for shellfish?

The correct response highlights the critical information that must be included on shellstock identification tags for shellfish, which is essential for ensuring food safety and traceability. The information required includes the harvester's identification number, the date of harvest, the location where the shellfish were harvested, and the specific type of shellfish. This information is crucial because it allows for tracking the shellfish back to their source, which is important in the event of a food safety issue, such as contamination outbreaks. By knowing where the shellfish were harvested and who harvested them, food safety authorities can effectively manage and trace any problems that may arise, ensuring the public's health is protected.

In contrast, other options such as expiration dates and storage requirements, nutrition information and serving suggestions, or allergen warnings and best-by dates do not address the fundamental need for traceability of shellfish, which is the purpose of the shellstock identification tags. Instead, they pertain to various food labeling elements but are not legally mandated for shellfish tracking. This underscores the importance of the correct information being specified for safe seafood handling practices.