What other nutrients, aside from zinc, are highlighted as significant in beef?

The correct choice emphasizes the significance of iron and B vitamins found in beef, which are crucial for several bodily functions. Iron is an essential mineral that plays a vital role in the formation of hemoglobin in red blood cells, responsible for transporting oxygen throughout the body. This is particularly important for maintaining energy levels and overall vitality.

B vitamins, including B12 and B6, contribute to energy metabolism, support the nervous system, and are involved in the production of red blood cells. B12, found predominantly in animal products, is crucial for preventing anemia and maintaining cognitive function.

In contrast to the other options, which either highlight nutrients less prominent in beef or focus on components that may not have the same degree of nutritional relevance, the emphasis on iron and B vitamins showcases the importance of beef as a source of these essential nutrients.