Which of the following legumes is commonly grown for its seeds?

Peanuts are commonly grown for their seeds, which are the edible components that can be consumed as food. This legume, scientifically known as Arachis hypogaea, is unique because it flowers above ground but the pods mature underground, a characteristic that differentiates it from many other seed crops. The seeds of peanuts are nutritious and high in protein and healthy fats, making them popular in various culinary applications, including snacks, spreads like peanut butter, and oil extraction.

In contrast, cotton is primarily grown for its fibers rather than its seeds, which are usually considered byproducts. Corn is a cereal grain rather than a legume and is mainly cultivated for its kernels, which serve different purposes like food and animal feed. Barley, similar to corn, is a cereal grain and is mainly produced for its grains used in animal feed, brewing, and as a food source, rather than for the seeds characteristic of legumes. This makes peanuts the appropriate choice when considering which legumes are specifically grown for their seeds.