Answer;
-A high degree of unsaturated bonds
In general, the lipids that we refer to as oils at room temperature have a high degree of unsaturated bonds.
Explanation;
-Lipids are fatty, waxlike biomolecules found in the human body and other organisms. They serve several different roles in the body, including fueling it, storing energy for the future, sending signals through the body and being a constituent of cell membranes, which hold cells together.
-Fats and oils belong to a subgroup of lipids, called glycerides, that consist of three fatty acids and a glycerol backbone. Oils are composed of triglycerides, predominantly unsaturated fatty acids. They are liquid at room temperature, even if the fatty acid chains are long.