Which of the following is required for the body to produce proteins?

The body requires essential amino acids for protein synthesis because these are the building blocks that make up proteins. While the body can produce some amino acids through metabolic processes, essential amino acids cannot be synthesized internally and must be obtained through diet. This means that for protein production to occur, the body needs access to these essential amino acids, as they are critical for forming the various proteins that perform numerous functions in the body, including structural roles, enzyme activity, and signaling.

Glucose is primarily used as a source of energy rather than a direct contributor to protein synthesis. Although vitamins and minerals play important roles in various biochemical processes, they do not serve as the fundamental building blocks for protein. Instead, they assist in enzyme function and metabolism, which can indirectly support protein synthesis, but they are not required for the actual production of proteins.