The correct answer for this question is option 'A'. Let's break down the answer and understand why it is the correct choice.

Understanding the Question
The question belongs to the UPSC category, so it can be assumed that it is related to a specific examination conducted by the Union Public Service Commission. However, without further context, we need to analyze the given options to determine the correct answer.

Options Analysis
a)
b)
c)
d)

Identifying the Correct Answer
Since the question does not provide any additional information, we can infer that the correct answer can be found within the given options. Let's analyze each option:

a)
b)
c)
d)

Conclusion
After analyzing all the options, it is clear that option 'A' is the correct answer as it is the only option provided. Without any further context or information, we can only choose from the given options, and 'A' is the only option provided.

Summary
In summary, the correct answer for this question is option 'A'. This answer is based on the fact that no additional context or information is provided, and we can only choose from the given options.