Which of the following foods is considered a good source of calcium?

Dairy products are considered a good source of calcium due to their high calcium content, which is essential for maintaining strong bones and teeth, as well as supporting muscle function and nerve signaling. Foods such as milk, cheese, and yogurt are particularly rich in calcium and are often fortified with additional nutrients.

While other options like broccoli and almonds do contain calcium, their absorption can be hindered by certain compounds present in the plant, making dairy products the most efficient source of calcium for many individuals. Whole grains also provide some calcium, but not in significant amounts compared to dairy products. Thus, the best option for obtaining adequate dietary calcium is indeed dairy products.