Which characteristic is true about essential nutrients?

Essential nutrients are those that the body cannot synthesize in sufficient quantities to meet its physiological needs. Therefore, they must be obtained through the diet. This includes essential fatty acids, essential amino acids, vitamins, and certain minerals, all of which play critical roles in various bodily functions, such as building and repairing tissues, supporting metabolic processes, and maintaining overall health.

In contrast, the other options do not accurately describe essential nutrients. While some nutrients can be synthesized by the body, essential nutrients specifically cannot and must come from external sources. They are not optional; rather, they are vital for survival and proper functioning. Furthermore, essential nutrients are crucial for numerous body processes, including energy production, immune function, and cellular repair, highlighting their importance to health and well-being.