Which plant food is known for having complete proteins?

Tofu is recognized for having complete proteins because it is made from soybeans, which contain all nine essential amino acids that the human body cannot synthesize on its own. This characteristic is crucial for individuals seeking to achieve a balanced diet, especially those following vegetarian or vegan lifestyles, as they often rely on plant-based sources of protein.

While peas may offer a good protein source, they do not provide all essential amino acids in the necessary ratios to be considered complete. Quinoa is also notable for being a complete protein, as it includes a balanced set of amino acids. However, rice lacks certain essential amino acids and is therefore classified as an incomplete protein source. Tofu stands out in this question as it is a versatile and rich source of complete protein, making it a staple in many diets focused on plant nutrition.