The correct answer is: C. Mansabdari system.
The mansabdari system was a system of military and civil administration introduced by the Mughal emperor Akbar in the 16th century. It was a hierarchical system in which officers were appointed to ranks (mansabs) based on their military and administrative abilities. The higher the rank, the more soldiers and revenue the officer was entitled to.
The mansabdari system was a unique system that combined military and civil functions. It was a very effective system of administration that helped the Mughals to maintain control over their vast empire.
The other options are incorrect because:
- A. Centralised autocracy is not a unique system developed by the Mughals. It is a system of government in which power is concentrated in the hands of a single ruler. This system was used by many empires and kingdoms throughout history, including the Mughal Empire.
- B. Ryotwari settlement is a system of land revenue collection in which the cultivator is directly responsible to the government for the payment of revenue. This system was introduced by the British in the 18th century.
- D. Local responsibilities for crime detection is not a unique system developed by the Mughals. It is a system in which local communities are responsible for the detection and prevention of crime. This system has been used in many societies throughout history.