Which of the following statement is `//` are correct with respect to remedy for plastic waste?
a. Polyblend is a fine mixture of recycled modified palstic.
b. It is a zero-waste procedure
c. It was due to the collaboration of town people of Arcata and biologistis of Humboldt State University
d. A blend of polyblend and bitumen enhances bitumen's water - repellent properties and helps to increase road life

Options

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

Answer

To solve the question regarding the correctness of statements related to remedies for plastic waste, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Analyze Statement A**:
- **Statement**: "Polyblend is a fine mixture of recycled modified plastic."
- **Evaluation**: This statement is correct. Polyblend is indeed a mixture made from recycled plastic that has been modified for various uses, particularly in road construction.

**Hint**: Look for definitions or descriptions of Polyblend in reliable sources to confirm its composition.

2. **Analyze Statement B**:
- **Statement**: "It is a zero-waste procedure."
- **Evaluation**: This statement is incorrect. While Polyblend is a useful method for recycling plastic waste, it does not eliminate all waste; some waste is still generated in the process.

**Hint**: Consider the implications of "zero waste" and whether any process can truly achieve that in practical applications.

3. **Analyze Statement C**:
- **Statement**: "It was due to the collaboration of town people of Arcata and biologists of Humboldt State University."
- **Evaluation**: This statement is incorrect. The development of Polyblend was not attributed to this collaboration; it was actually developed by a plastic waste collector in Bangalore.

**Hint**: Verify the origins of Polyblend and its development history to clarify any misconceptions.

4. **Analyze Statement D**:
- **Statement**: "A blend of polyblend and bitumen enhances bitumen's water-repellent properties and helps to increase road life."
- **Evaluation**: This statement is correct. Mixing Polyblend with bitumen does enhance the water-repellent properties of bitumen and significantly increases the lifespan of roads.

**Hint**: Research the benefits of using Polyblend in construction materials to understand its impact on road durability.

### Conclusion:
Based on the evaluations:
- Statement A is correct.
- Statement B is incorrect.
- Statement C is incorrect.
- Statement D is correct.

The correct options are **A and D**. Therefore, the answer is option 3 (A and D).