The correct answer is option 2 - Fats. In addition to carbohydrates, fats are a major source of energy in our food. Fats, also known as lipids, are essential for our body as they provide a concentrated and long-lasting source of energy. When consumed, fats are broken down into fatty acids, which can be used by the body for energy production. Fats also serve as a protective layer for our organs, help in the absorption of fat-soluble vitamins, and assist in hormone production. Although proteins, minerals, and vitamins are vital for the proper functioning of our body, they primarily play roles other than being the main source of energy. Therefore, fats are another significant contributor to our body`s energy needs, along with carbohydrates.