Concept:Fat digestion begins with bile emulsifying fats in the duodenum.Solution:Bile is produced by the liver, stored in the gall bladder, and released into the duodenum.Bile breaks down large fat droplets into smaller droplets, which is the first step of fat digestion.Lipase then acts on the emulsified fats later in digestion.Key point: Bile contains no enzyme. It does not digest fat chemically; it only emulsifies it (breaks large fat drops into tiny droplets) so that pancreatic lipase can act on a larger surface. This emulsification in the duodenum is the first step.Answer:Option B (bile breaks down the fat in the duodenum)