In an unusually detailed dissection of your dinner, you isolate an unknown fatty acid. it is a liquid at room temperature (that is, has a low melting point and contains carbon-carbon double bonds. what are you most likely to be eating?

Based on the description that given above, i think you're most likely eating: a plant
Fatty acids that contain carbon-carbon double bonds and liquid in a room temperature are most likely to be unsaturated fats.
The food source that contains a high amount of unsaturated fats tends to be plant based.