Biology

The correct answer is: B.Protein.

Red meat, beans, dairy, and fish are all excellent sources of protein.

Here’s how each of them contributes to protein intake:

1.Red meat (e.g., beef, lamb) is rich in complete proteins, which contain all the essential amino acids your body cannot synthesize on its own.

2.Beans (e.g., black beans, kidney beans) are great plant-based sources of protein, though they may lack one or more essential amino acids compared to animal proteins (but can be complemented by other plant-based foods).

3.Dairy (e.g., milk, cheese, yogurt) is high in protein, especially casein and whey proteins, which are complete proteins.

4.Fish is...