Fill up the blanks in the following paragraph by selecting the correct option. Small amounts of monosaccharides like glucose, amino acids and some of electrolytes like chloride ions are absorbed by (i). However, some of the substances like fructose and some amino acids are absorbed by the mechanism called the (ii). Various nutrients like amino acids and electrolytes like `Na^(+)` are absorbed into the blood by (iii).

Options

A. `{:("(i)","(ii)","(iii)"),("Facilitated transport","active transport","simple diffusion"):}`
B. `{:("(i)","(ii)","(iii)"),("simple diffusion","facilitated transport","active transport"):}`
C. `{:("(i)","(ii)","(iii)"),("active transport","transport active","diffusion facilitated"):}`
D. `{:("(i)","(ii)","(iii)"),("simple diffusion","active transport","facilitated transport"):}`

Answer

To fill in the blanks in the given paragraph, we will analyze the absorption mechanisms for different substances in the digestive system.

### Step-by-Step Solution:

1. **Identify the first blank (i)**:
- The paragraph mentions that small amounts of monosaccharides like glucose, amino acids, and some electrolytes like chloride ions are absorbed.
- These substances are typically absorbed through **simple diffusion** because they can pass through the cell membranes without the need for energy or specific transport proteins.
- **Fill in the blank**: (i) **simple diffusion**.

2. **Identify the second blank (ii)**:
- The paragraph states that some substances like fructose and some amino acids are absorbed through a different mechanism.
- Fructose and certain amino acids are absorbed via **facilitated diffusion**, which involves specific transport proteins but does not require energy.
- **Fill in the blank**: (ii) **facilitated diffusion**.

3. **Identify the third blank (iii)**:
- The paragraph indicates that various nutrients like amino acids and electrolytes such as Na⁺ are absorbed into the blood.
- This process requires energy to move substances against their concentration gradient, which is known as **active transport**.
- **Fill in the blank**: (iii) **active transport**.

### Final Filled Paragraph:
Small amounts of monosaccharides like glucose, amino acids, and some electrolytes like chloride ions are absorbed by **simple diffusion**. However, some of the substances like fructose and some amino acids are absorbed by the mechanism called **facilitated diffusion**. Various nutrients like amino acids and electrolytes like Na⁺ are absorbed into the blood by **active transport**.

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