In this question, we are given two lists of resources and their classifications, and we need to match them correctly. The lists are as follows:

List I:

A. Basic (example)

B. Conventional non-renewable energy resource

C. Non-conventional renewable resource

D. Non-conventional non-renewable resource

List II:

1. Hydel power - inexhaustible resource

2. Coal

3. Natural gas

4. Wind power

From the given options, only option 1 correctly matches the resources with their classifications.

Explanation of Option 1:

- Basic (example) matches with Hydel power, which is an inexhaustible resource.

- Conventional non-renewable energy resource matches with Coal.

- Non-conventional renewable resource matches with Wind power.

- Non-conventional non-renewable resource matches with Natural gas.

Therefore, option 1, which is 3 2 1 4, is the correct answer.

Note: The answer provided is generally correct. However, it would be helpful if the classifications in List II were given more clearly.