Which of the following is a function of lipids?

The function of lipids that aligns with the answer is their crucial role in protecting cells from dehydration. Lipids, particularly in the form of phospholipids, make up the cell membrane, which acts as a barrier to prevent the loss of water and other essential substances. This hydrophobic property of the lipid bilayer helps maintain the internal environment of the cell and supports cellular homeostasis, thereby protecting the cells from dehydration.

Additionally, lipids contribute to moisture retention in the skin, as they are a key component of the skin's barrier function. They help in maintaining hydration levels and preventing transepidermal water loss, which is vital for skin health. Thus, the protective function of lipids in relation to dehydration is essential for overall cellular integrity and function.