Final answer:
Fatty acids are primarily stored C. as triglycerides in adipose tissue and serve as a major fuel source for the body, particularly for low-intensity activities and resting metabolic processes.
Step-by-step explanation:
Most fatty acids in the body are stored under normal conditions as triglycerides in adipose tissue. These triglycerides are composed of three fatty acids linked to a glycerol molecule, forming a stable and efficient energy-storage molecule. Adipose tissue, commonly known as body fat, serves several purposes, including energy storage, protection, and insulation. Triglycerides are also important for physical activity, providing a significant amount of energy for sustained, low-intensity exercise, and are essential for the metabolism of fat-soluble vitamins such as A, D, E, and K.
Within adipocytes, or fat cells, fat is predominantly stored in the form of large droplets of triglycerides. When energy is needed, these triglycerides are broken down into glycerol and free fatty acids through the process of B-oxidation. The glycerol component can travel to the liver for further oxidation, while fatty acids can be re-esterified or broken down for immediate energy use.