Animal fats are
solids and have a smaller proportion of unsaturated fats.
solids and have a higher proportion of unsaturated fats.
liquids and have a higher proportion of unsaturated fats.
liquids and have a smaller proportion of unsaturated fats.

Animal fats are solids and have a higher proportion of saturated fats. The animal fat containing food products such as butter, cheese, cream, fatty meats etc., are all rich in the saturated fats and contain dietary cholesterol. These products raise the chances of heart attack, due to increase LDL.

The correct answer is "atomic weight".