The catalyst and solvent used in `MPV` (Meerwein- Ponndorf-Verley) reaction are:

Options

A. a.
B. b.
C. c.
D. d.

Explanation

### Step-by-Step Solution:

1. **Understanding the MPV Reaction**: The Meerwein-Ponndorf-Verley (MPV) reaction is a method used to reduce aldehydes and ketones to their corresponding alcohols. This reaction is significant in organic chemistry for the conversion of carbonyl compounds.

2. **Identifying the Catalyst**: In the MPV reaction, the catalyst used is Aluminum Isopropoxide. Its chemical formula is \( \text{Me}_2\text{CHO}_3\text{Al} \). This catalyst facilitates the transfer of hydride ions during the reduction process.

3. **Identifying the Solvent**: The solvent used in the MPV reaction is Isopropanol, which is represented by the formula \( \text{Me}_2\text{CHOH} \). Isopropanol acts as a medium for the reaction, allowing the reactants to interact effectively.

4. **Conclusion**: Therefore, the catalyst and solvent used in the Meerwein-Ponndorf-Verley reaction are Aluminum Isopropoxide and Isopropanol, respectively.

### Final Answer:
- **Catalyst**: Aluminum Isopropoxide (\( \text{Me}_2\text{CHO}_3\text{Al} \))
- **Solvent**: Isopropanol (\( \text{Me}_2\text{CHOH} \))