Which of the following foods is a good source of healthy fats?

Avocados are a nutrient-dense food that is an excellent source of healthy fats, specifically monounsaturated fats. These fats are beneficial for heart health as they help to reduce bad cholesterol levels and lower the risk of heart disease. In addition to healthy fats, avocados provide a range of essential nutrients, including fiber, vitamins, and minerals, contributing to overall health.

In contrast, the other options do not provide healthy fats. Potatoes primarily contain carbohydrates and have minimal fat content. White bread is made from refined flour and is also largely devoid of healthy fats, focusing instead on carbohydrates. Candy bars are typically high in sugar and unhealthy fats, which can lead to negative health outcomes if consumed in excess. Therefore, avocados stand out as the best choice due to their composition of beneficial fats and nutrients.