Final answer:
The dietitian should first conduct a thorough investigation of the rodent sighting in the dry storage area.
Step-by-step explanation:
The dietitian should first conduct a thorough investigation of the rodent sighting in the dry storage area.
This is important to identify the extent of the problem, determine the potential risks of contamination, and assess the need for further action.
Once the investigation is complete, appropriate pest control measures can be implemented, contaminated food can be disposed of, and if necessary, the local health department can be notified.