Assertion (A): The development which can be maintained for a long time without undue damage to the environment is called sustainable development.
Reason (R): It provide the economic well being to the present and future generation.

Options

A. Both Assertion and Reason are true and R is the correct explanation of A.
B. Both Assertion and Reason are true but Reason is NOT the correct explanation of Assertion
C. Assertion is true but Reason is false
D. Assertion is false and Reason is true

Explanation

To solve the assertion and reason question, we need to analyze both statements carefully.

### Step-by-Step Solution:

1. **Understanding the Assertion (A)**:
- The assertion states that "The development which can be maintained for a long time without undue damage to the environment is called sustainable development."
- This definition is accurate. Sustainable development indeed refers to practices that meet the needs of the present without compromising the ability of future generations to meet their own needs, while also ensuring minimal environmental impact.

2. **Understanding the Reason (R)**:
- The reason states that "It provides the economic well-being to the present and future generation."
- This statement is also true. Sustainable development aims to create economic opportunities that benefit both current and future populations, ensuring that resources are available for future generations.

3. **Analyzing the Relationship between A and R**:
- While both the assertion and reason are correct, we need to determine if the reason adequately explains the assertion.
- The assertion focuses on the environmental aspect of sustainable development, while the reason emphasizes economic well-being. Although they are related, the reason does not directly explain why sustainable development is necessary for maintaining the environment.

4. **Conclusion**:
- Both the assertion (A) and the reason (R) are true statements, but the reason does not provide a proper explanation for the assertion. Therefore, the correct conclusion is that both statements are correct, but the reason is not a valid explanation for the assertion.

### Final Answer:
- Both A and R are true, but R is not the correct explanation of A.