Which of the following is classified as a coarse grain?

Grain sorghum is classified as a coarse grain because it is a drought-resistant cereal grain primarily grown in warm climates. Coarse grains are typically characterized by their higher fiber content, larger seed size, and generally lower protein content compared to other grains like wheat and rice, which are finer grains. Coarse grains, including grain sorghum, are often used for animal feed, ethanol production, and certain food products.

In comparison, wheat, barley, and rice are considered fine grains. Wheat is widely known for its baking qualities and high gluten content, barley is often utilized in brewing and as livestock feed, and rice is a staple food in many cultures, recognized for its high carbohydrate content and culinary uses. Each of these grains has distinct characteristics and applications, reinforcing why grain sorghum stands out as a coarse grain in this context.