Choose the correct combination
`{:(,,"ColumnI","","ColumnII"),(,a,"Carbohydrates",1,"Trypsin"),(,b,"Protein",2,"Cholesterol"),(,c,"Nucleic acid",3,"Inulin"),(,d,"Lipid",4,"Adenylic acid"):}`

Options

A. 1 - b, 2 - d, 3 - a, 4 - c
B. 1 - b, 2 - c, 3 - d, 4 - a
C. 1 - c, 2 - d, 3 - a, 4 - b
D. 1 - d, 2 - a, 3 - b, 4 - c

Answer

To solve the question, we need to match the items from Column I with the correct items from Column II based on their classifications. Let's go through each item step by step.

### Step-by-Step Solution:

1. **Identify Carbohydrates:**
- In Column I, the first item is "Carbohydrates."
- In Column II, we have "Inulin," which is a type of carbohydrate (specifically a polysaccharide).
- **Match:** Carbohydrates (A) → Inulin (3).

2. **Identify Proteins:**
- The second item in Column I is "Protein."
- In Column II, "Trypsin" is listed, which is a digestive enzyme and a type of protein.
- **Match:** Protein (B) → Trypsin (1).

3. **Identify Nucleic Acids:**
- The third item in Column I is "Nucleic Acid."
- In Column II, "Adenylic acid" is a type of nucleic acid (specifically a nucleotide).
- **Match:** Nucleic Acid (C) → Adenylic Acid (4).

4. **Identify Lipids:**
- The last item in Column I is "Lipid."
- The only remaining option in Column II is "Cholesterol," which is a type of lipid.
- **Match:** Lipid (D) → Cholesterol (2).

### Summary of Matches:
- A (Carbohydrates) → 3 (Inulin)
- B (Protein) → 1 (Trypsin)
- C (Nucleic Acid) → 4 (Adenylic Acid)
- D (Lipid) → 2 (Cholesterol)

### Final Answer:
The correct combinations are:
- A → 3
- B → 1
- C → 4
- D → 2

Thus, the correct answer is option **1**.

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