The correct option is:
C. Lipids that are made up of cholesterol.
The lipids stored below the dermis of homeotherms are primarily triglycerides composed of saturated fatty acids and cholesterol esters. These lipids act as an insulating layer and energy store for the animal.
Options A, B and D are incorrect:
A. Lipids made up of unsaturated fatty acids. - Triglycerides with unsaturated fatty acids are not primarily stored below the dermis.
B. Lipids that are made up of unsaturated fatty acid. - Same as A, triglycerides with unsaturated fatty acids are not the main lipids stored below the dermis.
D. None fatty acids? - This does not make sense. Lipids stored below the dermis do contain fatty acids.
So the key point is that cholesterol esters, containing cholesterol, are the lipids primarily stored below the dermis of homeotherms.
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