How many additional cases need to be inspected if there are more than 600 cases of eggs?

The correct answer is that one additional case needs to be inspected if there are more than 600 cases of eggs. This indicates a specific protocol or guideline that is triggered when a threshold, in this case, 600 cases, is exceeded.

Typically, inspection rules are designed to ensure quality control and safety in food products. If the number of cases surpasses a set limit like 600, an inspection adds an element of due diligence to verify that the additional quantity meets the necessary standards. The choice of inspecting one additional case reflects a balanced approach to maintaining quality without overwhelming resources.

The other options suggest the need for inspecting either two or three additional cases or none at all, which would not align with the concept of measured and consistent quality assurance procedures. Inspecting more cases than necessary might strain resources and reduce efficiency, while inspecting none would disregard the potential need for oversight with increased volume. Thus, inspecting one additional case strikes a practical balance in this scenario.