What fat sources are high in polyunsaturated fatty acids?

The correct response highlights that sunflower and corn oils are excellent sources of polyunsaturated fatty acids (PUFAs). These oils are rich in omega-6 fatty acids, which are a type of PUFA that plays vital roles in human health, including cellular function and skin health. Both sunflower and corn oils also have a relatively high smoke point, making them suitable for various cooking methods, thus enhancing their popularity in food preparation.

In contrast to the other options, olive and canola oils are primarily known for being high in monounsaturated fatty acids, rather than polyunsaturated ones, though canola does contain some PUFAs. Coconut and palm oils are rich in saturated fats, which do not contribute to the polyunsaturated fat profile. Soy does provide some polyunsaturated fats, but peanut oil is significantly higher in monounsaturated fats, thus falling short in comparison to the clear PUFA sources identified in the correct answer. Recognizing these distinctions helps in understanding dietary fat sources and their health implications.