Which of the following is considered a complete protein source?

A complete protein source is one that contains all nine essential amino acids in sufficient quantities necessary for the body's needs. Eggs are often highlighted as a prime example of a complete protein because they provide a balanced profile of essential amino acids, making them an excellent choice for maintaining muscle tissue, supporting recovery, and contributing to overall health.

While chicken is also a complete protein, it may not be seen as the primary answer in this context since the question suggests focusing specifically on the best-known complete protein source among the choices provided. Rice and peas, on the other hand, do not contain all the essential amino acids in significant amounts on their own, which makes them incomplete protein sources. For instance, rice is predominantly low in lysine, while peas lack sufficient methionine. Thus, eggs stand out clearly as the complete protein choice in this list, given their excellent amino acid profile and digestibility.