Concept:Bile helps in the digestion of fats by making them soluble for the enzyme lipase.Explanation:The liver produces bile, which breaks down large fat droplets into smaller droplets. This process is called emulsification. Emulsification increases the surface area of fats. The enzyme lipase acts on this increased surface to digest fats efficiently. Without bile, lipase cannot act properly on fats. Thus, fat digestion is greatly reduced. Other enzymes like amylase, cellulase, and protease are not dependent on bile.Answer:C. Lipase