Final answer:
Synthetic trans-fats are considered less healthy compared to naturally unsaturated and saturated fats because they increase 'bad' LDL cholesterol, decrease 'good' HDL cholesterol, and promote inflammation, all of which contribute to a higher risk of coronary heart disease. the correct option is 2.
Step-by-step explanation:
Comparing synthetic trans-fats against naturally unsaturated and saturated fats, research indicates that synthetic trans-fats are less healthy. Synthetic trans-fats, which are created during the process of partial hydrogenation of unsaturated fats like corn oil, have been shown to increase LDL ('bad') cholesterol while also decreasing HDL ('good') cholesterol. In contrast, unsaturated fats, which are common in vegetable oils, tend to have health benefits, especially those with omega-3 fatty acids. On the other hand, fats containing saturated fatty acids tend to deposit in arteries, leading to health issues, though they are not as detrimental as trans-fats.
Therefore, synthetic trans-fats have a more negative impact on heart health compared to unsaturated fats and are also worse than saturated fats because they contribute to an increased risk of coronary heart disease by impacting cholesterol levels and promoting inflammation.