What is the difference between the smoking point of animal fats and vegetable fats ?

The difference between animal fat and vegetable oil is that vegetable oil is composed mostly of polyunsaturated fats, which are missing more than one pair of hydrogens in its structure, while animal fat is composed mostly of monounsaturated fats, which are missing only a single pair of hydrogen, and saturated fats.

a. the production of carbon dioxide through the process of photosynthesis

i think its the first one