Which of the following is not a source of polyunsaturated fats?

Polyunsaturated fats are essential fatty acids that the body cannot produce on its own, making them important to include in the diet. They are found in various plant-based foods and certain fish. The correct answer points out that butter is not a source of polyunsaturated fats.

Butter is a dairy product that predominantly contains saturated fats, which are different from polyunsaturated fats. In contrast, walnuts, flax seeds, and pumpkin seeds are rich in polyunsaturated fats. Walnuts are known for their high omega-3 fatty acid content, flax seeds are an excellent source of alpha-linolenic acid (also an omega-3), and pumpkin seeds provide omega-6 fatty acids. These foods contribute beneficial fats that can support heart health and overall wellness, making them a preferred choice for obtaining polyunsaturated fats in the diet.