Which of the following food is a rich source of protein?
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Fish
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Potato
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Butter
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Banana
A
Correct answer
Explanation
Fish is an excellent source of high-quality complete protein, containing all essential amino acids in optimal proportions. Fish typically provides 20-25g of protein per 100g serving. Potatoes are primarily carbohydrates, butter is mainly fat with minimal protein, and bananas are carbohydrate-rich with only about 1g protein per 100g.