Which type of fat is known to be liquid at room temperature and found in vegetable oils?

Polyunsaturated fat is recognized for being liquid at room temperature and is commonly found in various vegetable oils. This type of fat contains multiple double bonds in its chemical structure, which prevents it from solidifying at room temperature, thus maintaining its liquid form. Common sources of polyunsaturated fats include oils such as sunflower, corn, and soybean oil, which are widely used in cooking and food production.

Trans fats, on the other hand, can be found in some processed foods and are often created during the hydrogenation process, where liquid vegetable oils are turned into solid fats. Cholesterol is a type of lipid but is not classified as a fat and it isn’t liquid at room temperature, as it is typically found in animal products. Saturated fats are usually solid at room temperature and primarily come from animal sources, such as butter and meat, as well as some plant oils like coconut oil and palm oil. This makes polyunsaturated fat the correct choice for being liquid at room temperature and abundant in vegetable oils.