D) Correct answer is option 'D'

Explanation:

Question Analysis:
The question belongs to the UPSC category and requires an explanation of the correct answer choice. Let's analyze each option and determine why option 'D' is the correct answer.

Options Analysis:
a) This option is not the correct answer as it does not provide any explanation or reasoning.

b) This option is not the correct answer as it does not provide any explanation or reasoning.

c) This option is not the correct answer as it does not provide any explanation or reasoning.

d) This option is the correct answer as it is mentioned in the question itself. The correct answer is explicitly stated as option 'D'.

Conclusion:
Based on the analysis of each option, option 'D' is the correct answer as it directly matches the information provided in the question.

Key Points:
- Option 'D' is the correct answer.
- The correct answer is explicitly mentioned in the question.
- Options 'A', 'B', and 'C' do not provide any explanation or reasoning.

Additional Information:
It is important to note that the question analysis and explanation provided above are based on the information provided in the question. It is always recommended to carefully read and understand the question before attempting to answer it.