In which part of the alimentary canal, the complete digestion of fat takes place?

Small intestine

The correct answer is Option (2) - Small intestine

The complete digestion of fat takes place in the small intestine. This process involves the action of enzymes and bile, breaking down fats into fatty acids and glycerol for absorption into the bloodstream. The small intestine is a crucial site for nutrient absorption, and it plays a central role in the digestion and absorption of various food components.