Kamandaka’s Nitisara is a significant contribution to the field of political morality. Nitisara is a Sanskrit treatise that provides guidance on the principles and conduct of rulers and leaders. It encompasses various aspects of politics and governance, including ethics, statecraft, diplomacy, and administration.

Option 1: Logic and Philosophy - This option is not correct. While Nitisara may touch upon certain logical and philosophical ideas, its primary focus is on political morality and practical guidance for rulers, rather than abstract concepts of logic and philosophy.

Option 2: Mathematics - This option is not correct. Nitisara does not deal with mathematical concepts or calculations. Its content revolves around political principles and practices, rather than mathematical equations.

Option 4: Grammar - This option is not correct. Nitisara does not explore grammar or linguistic aspects. It primarily focuses on the ethical and practical aspects of political governance.

In conclusion, Kamandaka’s Nitisara is primarily a contribution to the field of political morality, providing valuable insights into the conduct and principles of rulers and leaders.