Which of the folowing is bio-degradable polymer?

Options

A. Nylon `-6,6`
B. Nylon `-6,10`
C. Nylon `-6`
D. Nylon `-2-`Nylon `-6`

Explanation

To determine which of the following options is a biodegradable polymer, we need to analyze each option provided.

### Step-by-Step Solution:

1. **Identify the Options**:
Let's denote the options as follows:
- Option A: Nylon 6,6
- Option B: Nylon 6
- Option C: Nylon 6,10
- Option D: Nylon 2, Nylon 6

2. **Understand Biodegradable Polymers**:
Biodegradable polymers are those that can be broken down by microorganisms into natural substances such as water, carbon dioxide, and biomass.

3. **Analyze Each Option**:
- **Option A: Nylon 6,6**: This polymer is made from hexamethylenediamine and adipic acid. It is a polyamide and is not biodegradable.
- **Option B: Nylon 6**: This polymer is made from caprolactam. It is also a polyamide and is not biodegradable.
- **Option C: Nylon 6,10**: This polymer is made from hexamethylenediamine and decanediol dichloride. Like the others, it is a polyamide and is not biodegradable.
- **Option D: Nylon 2, Nylon 6**: This polymer is made from amino caproic acid and glycine. It is classified as biodegradable.

4. **Conclusion**:
After analyzing all the options, we find that the only biodegradable polymer among the options is **Nylon 2, Nylon 6**. Therefore, the correct answer is **Option D**.

### Final Answer:
The biodegradable polymer is **Option D: Nylon 2, Nylon 6**.