The correct answer is option 'C' - Lord Rippon.

Lord Rippon, whose full name was George Frederick Samuel Robinson, served as the Viceroy of India from 1880 to 1884. During his tenure, he introduced several significant reforms and policies aimed at modernizing and improving the governance of India. One such reform was the creation of the Indian Imperial Order of the Star of India, which was established in 1861 to honor Indian princes and rulers who had been loyal to the British Empire.

Under Lord Rippon's administration, the Indian Imperial Order of the Star of India underwent some changes. One of these changes was the appointment of Maharana of Chittor as the Grand Commander of the order. The Maharana of Chittor was the ruler of the princely state of Chittor, located in present-day Rajasthan, India. The title of Grand Commander of the Star of India (GCSI) was bestowed upon the Maharana as a recognition of his loyalty and service to the British Empire.

By conferring this title upon the Maharana of Chittor, Lord Rippon acknowledged his significance and contributions as a ruler. This title was not only a symbol of honor but also carried a certain level of prestige and authority. The Grand Commander of the Star of India (GCSI) was considered a prestigious position within the Indian Imperial Order of the Star of India hierarchy.

Lord Rippon's decision to bestow this title upon the Maharana of Chittor was a strategic move to strengthen the British Empire's relationship with the princely states. It aimed to foster loyalty and cooperation among the rulers and ensure their continued support for British rule in India.

In conclusion, Lord Rippon, the Viceroy of India from 1880 to 1884, titled the Maharana of Chittor as the Grand Commander of the Star of India (GCSI). This title was a recognition of the Maharana's loyalty and service to the British Empire and aimed to strengthen the relationship between the British and the princely states.