Molecule which does not oxidise

Options

A.
B.
C.
D.

Explanation

To determine which molecule does not oxidize, we need to analyze the oxidation behavior of different types of alcohols and phenols.

### Step-by-Step Solution:

1. **Identify the Types of Compounds**: The question mentions phenol and different types of alcohols: primary (1°), secondary (2°), and tertiary (3°) alcohols.

2. **Understand Oxidation of Alcohols**:
- **Primary Alcohols (1°)**: These can be oxidized to aldehydes and then further to carboxylic acids.
- **Secondary Alcohols (2°)**: These can be oxidized to ketones and can further oxidize under strong conditions.
- **Tertiary Alcohols (3°)**: These do not oxidize easily because they lack a hydrogen atom on the carbon bearing the hydroxyl group, making them resistant to oxidation.

3. **Consider Phenol**:
- Phenol has a hydroxyl group (-OH) attached to a benzene ring. The carbon-oxygen bond in phenol is strong due to resonance and double bond character, making it less susceptible to oxidation compared to alcohols.

4. **Conclusion**: Among the compounds discussed, tertiary alcohols and phenol are less likely to oxidize. However, phenol is particularly resistant to oxidation due to its stable structure. Therefore, phenol is the molecule that does not oxidize.

### Final Answer:
**Phenol does not oxidize.**