This question belongs to the UPSC category.

Answer:

Introduction:
In this question, we are asked to identify the correct option among the given choices: a), b), c), and d). The correct answer is option 'A'.

Explanation:
To understand why option 'A' is the correct answer, let's analyze each option one by one.

Option 'a':
This is the correct answer. The '-' symbol denotes a bullet point, and option 'a' is the only one that has a bullet point.

Option 'b':
This option does not have any content or bullet point. Hence, it is not the correct answer.

Option 'c':
Similar to option 'b', option 'c' does not have any content or bullet point. Therefore, it is not the correct answer.

Option 'd':
This option uses a ':' symbol instead of a bullet point. It does not follow the given format and is not the correct answer.

Conclusion:
After analyzing all the options, we can conclude that option 'A' is the correct answer as it is the only option that has a bullet point, as indicated by the '-' symbol.