Which type of nutrients provides the body with essential amino acids required for synthesizing tissues and hormones?

Complete proteins are the correct choice because they provide all nine essential amino acids that the body cannot synthesize on its own. Essential amino acids are crucial for various bodily functions, including the synthesis of tissues and hormones. These proteins are typically found in animal-based sources such as meat, fish, eggs, and dairy products, as well as in some plant-based sources like quinoa and soy.

Other macronutrients and micronutrients do not fulfill this role. Simple carbohydrates primarily serve as a quick source of energy and do not provide amino acids. Polyunsaturated fats are important for essential fatty acids and overall health but do not supply amino acids required for tissue and hormone synthesis. Fat-soluble vitamins are vital for various physiological functions and health but do not contribute amino acids either. Thus, complete proteins uniquely fulfill the body’s need for essential amino acids.