The correct answer is: B. Micro nutrients
Vitamins are organic substances that are essential for human health. They are required in small amounts, but they play a vital role in many bodily functions, including metabolism, energy production, and cell function. Vitamins are classified into two groups: water-soluble vitamins and fat-soluble vitamins. Water-soluble vitamins are absorbed by the body and excreted in the urine, while fat-soluble vitamins are absorbed by the body and stored in the liver and fatty tissues.
Macronutrients are nutrients that the body needs in large amounts. They include carbohydrates, protein, and fat. Carbohydrates are the body’s main source of energy. Protein is essential for building and repairing tissues. Fat is a source of energy and helps the body absorb vitamins.
Essential amino acids are amino acids that the body cannot produce on its own and must therefore be obtained from food. There are nine essential amino acids: histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.
Non-essential amino acids are amino acids that the body can produce on its own. There are 11 non-essential amino acids: alanine, asparagine, aspartic acid, cysteine, glutamic acid, glutamine, glycine, proline, serine, and tyrosine.
In conclusion, vitamins are micro nutrients, which means they are essential for human health but are required in small amounts.