The flow of solvent through a semipermeable membrane towards the solution side is known as

Options

A. adsorption
B. absorption
C. diffusion
D. osmosis.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the term that describes the flow of solvent through a semi-permeable membrane towards the solution side.

2. **Defining Key Terms**:
- **Solvent**: A substance that dissolves a solute, resulting in a solution.
- **Semi-permeable Membrane**: A membrane that allows certain molecules or ions to pass through it while blocking others.

3. **Identifying the Process**: The process described involves the movement of solvent molecules from an area of lower concentration (pure solvent) to an area of higher concentration (solution containing solute).

4. **Defining Osmosis**: The specific term for this process is "osmosis." Osmosis is defined as the movement of solvent molecules through a semi-permeable membrane from a region of lower solute concentration to a region of higher solute concentration.

5. **Conclusion**: Therefore, the flow of solvent through a semi-permeable membrane towards the solution side is known as **osmosis**.

---