The correct order of the macromolecules that gets digested in the body is
(a) Carbohydrate-fat-protein
(b) Carbohydrate-protein-fat
(c) Fat-protein-carbohydrate
(d) Fat-carbohydrate-protein

Options

A. Carbohydrate-fat-protein
B. Carbohydrate-protein-fat
C. Fat-protein-carbohydrate
D. Fat-carbohydrate-protein

Answer

To determine the correct order of macromolecule digestion in the body, we need to understand the digestive process for carbohydrates, fats, and proteins.

### Step-by-Step Solution:

1. **Digestion Begins in the Mouth**: The first step in digestion occurs in the buccal cavity (mouth) where food is chewed and mixed with saliva. Saliva contains the enzyme salivary amylase, which begins the breakdown of carbohydrates.

2. **Carbohydrate Digestion**: Since carbohydrates are the first macromolecules to be acted upon, they undergo partial digestion in the mouth. This makes carbohydrates the first macromolecule to start the digestion process.

3. **Food Moves to the Stomach**: After the mouth, the food (now a bolus) moves to the stomach. Here, the digestion of carbohydrates continues, but the focus shifts to the digestion of fats and proteins.

4. **Fat Digestion**: In the stomach and small intestine, bile (produced by the liver) emulsifies fats, making them easier to digest. Pancreatic enzymes further break down fats into fatty acids and glycerol. This means that fats are the second macromolecule to be digested after carbohydrates.

5. **Protein Digestion**: Finally, proteins are digested in the stomach and small intestine by enzymes such as pepsin and proteases. Proteins are broken down into peptides and eventually into amino acids. This makes proteins the last macromolecule to be digested.

6. **Conclusion**: Based on the above steps, the correct order of macromolecule digestion is carbohydrates first, followed by fats, and then proteins.

### Final Answer:
The correct order of the macromolecules that gets digested in the body is **(a) Carbohydrate - Fat - Protein**.

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