What is a characteristic of unsaturated fats?

Unsaturated fats are indeed characterized by being liquid at room temperature and are primarily sourced from plants. This type of fat includes monounsaturated and polyunsaturated fats, which are commonly found in oils, nuts, seeds, avocados, and certain fish. The structure of unsaturated fats includes one or more double bonds in their fatty acid chains, which prevents the molecules from packing closely together, resulting in a liquid state at room temperature.

Their health benefits have been widely recognized, as they can improve cholesterol levels, reduce the risk of heart disease, and provide essential fatty acids that the body cannot produce. Thus, the description of unsaturated fats as liquid and mainly derived from plant sources aligns perfectly with established nutritional knowledge.