Final answer:
Saturated fats are generally of animal origin and are solid at room temperature due to the straight, tightly packed carbon chains without double bonds. Therefore, the correct option is B.
Step-by-step explanation:
Saturated fats are typically of animal origin and are solid at room temperature. They are composed of fatty acid chains that have no double carbon bonds, which means they contain the maximum number of hydrogen atoms possible. Without double bonds, the carbon chains are straight and can pack tightly together, contributing to their solid state at room temperature. Most dietary saturated fat comes from animal sources such as meat, butter, and dairy products. However, there are also some plant sources of saturated fats, including coconut oil and palm oil.
It is also important to note that while saturated fats from animal sources are solid, some misconceptions may arise regarding plant-based fats. For instance, many vegetable oils are liquid at room temperature because they typically have more unsaturated or short-chain saturated fatty acids. However, some plant fats, like coconut oil, have higher saturated fatty acid content and can be solid at room temperature.