Which of the following are coarse grains?

all these is correct answer. 

Key Points

• Coarse grains are a vast subset of various short-season warm-weather (Kharif) crops such as Jowar (Sorghum), Bajra (Pearl Millet), Maize, Ragi (Finger Millet), and others.
• With its diverse agricultural endowments in terms of soil, rainfall, and climate, India has an abundance of crop diversification. 
• Because coarse grains have various drought tolerance properties, they are commonly grown in drought prone locations to provide food for human consumption, feed & fodder for animals and poultry, fuel, and industrial purposes. 
• It helps to generate employment in low rainfall locations where other alternative crops are limited during drought circumstances. 
• As a reliable source of revenue, these coarse cereals play a more important role in crisis situations.

Additional Information

• Because of their high protein, vitamins and minerals like iron content, and calcium and magnesium content, coarse grains are more cost-effective and nutritionally superior to wheat and rice.
• Coarse grains help protect against nutritional deficit, particularly in children and women. Its high iron content can help combat the high frequency of anemia in Indian reproductive-age women and newborns.
• Antioxidants are abundant in coarse grains.
• Coarse grains can also help with lifestyle and health issues including obesity and diabetes.
• Coarse grains are resistant to global climate change and can flourish in poor soils.