Which of the following is an essential nutrient that is required in quantities less than 1 gram per day?

Micronutrients are essential nutrients that the body requires in small amounts, typically less than 1 gram per day. These include vitamins and minerals, which play crucial roles in various physiological functions, including immune response, bone health, and energy production. Despite being needed in smaller quantities, micronutrients are vital for overall health and wellness, and their deficiency can lead to severe health issues.

Macronutrients, on the other hand, such as carbohydrates, proteins, and fats, are required in larger amounts to provide the energy the body needs for daily functions. Carbohydrates serve as the primary energy source, while proteins are essential for tissue repair and growth, and fats are critical for hormone production and cell structure.

Although all of these nutrients are important for bodily functions, only micronutrients are categorized as essential nutrients that are needed in minute quantities.