The correct option is
A Fat
Lipase acts on emulsified fats and lipids and breaks them into glycerol, monoacyl and diacylglycerols and fatty acids. Gastric lipase has a minor activity. Major site of lipase activity is the intestine. In small intestine bile emulsifies fats and pancreatic lipase acts on emulsified fats and lipids.
Hence the correct answer is (A)