Which of the following is NOT a good source of unsaturated fats?

Palm oil is not considered a good source of unsaturated fats because it is primarily composed of saturated fats. About 50% of the fat in palm oil is saturated, which can raise cholesterol levels and is associated with an increased risk of heart disease when consumed in excess. In contrast, olive oil, nuts, and avocados are high in monounsaturated fats and polyunsaturated fats, both of which are beneficial for heart health and can improve cholesterol levels. Therefore, while options like olive oil, nuts, and avocados are excellent sources of healthy unsaturated fats, palm oil does not fit this profile, making it the least suitable choice in this context.