A nurse is reinforcing teaching about complete and incomplete proteins with a client who has a prescription for a high-protein diet. The nurse should identify which of the following foods as sources of complete proteins? (Select all that apply.)

A. Cottage cheese: Cottage cheese is a dairy product that contains all nine essential amino acids, classifying it as a complete protein. It supports tissue repair and overall protein needs, making it suitable for a high-protein diet. B. Whole wheat bread: Whole wheat bread is primarily a plant-based protein source and is considered an incomplete protein because it lacks one or more essential amino acids. It must be combined with other plant proteins to achieve completeness. C. Salmon: Salmon is an animal-based protein that contains all essential amino acids, making it a complete protein. It also provides healthy omega-3 fatty acids, supporting cardiovascular health and anti-inflammatory benefits. D. Hard-boiled eggs: Eggs are a classic source of complete protein, offering all essential amino acids in optimal proportions. They are highly digestible and ideal for meeting high-protein dietary requirements. E. Steamed spinach: Spinach is a plant-based protein and considered incomplete because it does not provide all essential amino acids in adequate amounts. While nutritious, it cannot alone meet complete protein requirements.