Answer: OD. Omega-3 fatty acids
Tracy added salmon, walnuts, and flaxseeds to her diet to increase her intake of omega-3 fatty acids which supports the structure and function of her brain. Omega-3 fatty acids are essential fatty acids that cannot be produced by the body and must be obtained through diet. They play a crucial role in brain function and are important for cognitive and behavioral health. Salmon, walnuts, and flaxseeds are all good sources of omega-3 fatty acids.