Final answer:
Tier 2 foods in the Meat and Alternatives group are those that are less processed with higher nutrient density. Cooked fish, shellfish, poultry, or lean meat are considered tier 2 foods, being rich in protein and essential vitamins and minerals.
Step-by-step explanation:
The Meat and Alternatives group tier 2 foods primarily include options that are less processed and have a greater nutrient density compared to more processed meat and alternatives. Within the given options, cooked fish, shellfish, poultry, or lean meat (D) fit the criteria of tier 2 foods in the Meat and Alternatives group.
These foods are rich in important nutrients such as protein, iron, zinc, and B vitamins. They are considered to be whole and minimally processed.
While eggs (A), cooked tofu (B), and cooked legumes (C) can be part of a healthy diet and offer similar nutrients, they are not typically categorized as tier 2 foods since the 'Meat and Alternatives' classification tends to emphasize foods from animal sources or plant-based proteins that closely mimic the nutritional profile of meats.