Which of the following choices accurately describes unsaturated fats?

Unsaturated fats are primarily characterized by their liquid state at room temperature. This is due to the presence of one or more double bonds in their fatty acid chains, which prevents the molecules from packing closely together, resulting in a liquid form. Common sources of unsaturated fats include plant oils, nuts, and fish.

In contrast, saturated fats, which are typically solid at room temperature and primarily derived from animal sources, do not have double bonds in their fatty acid chains. The notion that unsaturated fats increase cholesterol levels is also misleading, as they can actually help improve cholesterol profiles by increasing good HDL cholesterol and lowering bad LDL cholesterol when used in place of saturated fats.