Which of the following is not a micronutrient?

Micronutrients are essential nutrients that are required in small amounts by the body for proper growth, development, and maintenance of physiological functions. They include vitamins and minerals such as iron, iodine, zinc, and copper, among others. Potassium is not considered a micronutrient because it is required in relatively large amounts by the body and is classified as a macronutrient along with other nutrients such as carbohydrates, proteins, and fats. Potassium is important for many physiological functions such as maintaining fluid balance and regulating heartbeat, and it is commonly found in many foods such as bananas, potatoes, and spinach.