Which type of protein source is complete and includes both meat and eggs?

The correct answer is a complete protein. This type of protein source contains all nine essential amino acids that the body cannot synthesize on its own and must be obtained through diet. Animal products, such as meat and eggs, are considered complete proteins because they provide these essential amino acids in sufficient quantities.

In contrast, other protein types, like incomplete proteins, lack one or more essential amino acids, commonly found in plant sources. Essential protein refers broadly to proteins that contain essential amino acids, but the term does not specifically address whether the source is complete. Vegetable protein typically lacks one or more essential amino acids, categorizing it as an incomplete protein in most cases. Thus, the role of complete proteins, especially those derived from animal sources, is vital for individuals looking to meet their protein quality requirements effectively.