Animal fats tend to be with hydrogen atoms. (fifth paragraph of this sub-section

Saturated.

Explanation:

Hello,

Animal fats are lipids derived from animals which are commonly solid at room temperature and mainly constituted by triglycerides which are strictly chemically saturated with hydrogen, it means  they do not tend to have double or triple bonded carbon atoms but just single-bonded carbons. This fact suggests that animal fats provide more energy than vegetable fats because they have more C-H bonds that when broken increase the total provided energy.

Best regards.

i think it is d. e because the next one is igneous.

the temperature of the gas, in k, not celsius.