Final answer:
When preparing poultry, after partial cooking, the essential next step is to continue cooking until it is completely done to ensure it's safe to consume. Partially cooked poultry shouldn't be served as it may harbor harmful bacteria.
Step-by-step explanation:
After partially cooking poultry, the next step that must be taken is to continue cooking until done. It's important not to serve poultry that has only been partially cooked because it might still contain harmful bacteria that can cause foodborne illnesses. Therefore, the correct response to the question is to continue cooking the poultry until it reaches a safe internal temperature. According to food safety guidelines, perishable foods that are left at a temperature between 4°C and 60°C (40°F and 140°F) for more than two hours should be discarded. This is because bacteria can multiply rapidly at these temperatures, increasing the risk of foodborne illness. Thus, it's essential to ensure that the poultry is fully cooked and kept hot until served to prevent such risks.