Indo-Persian style of architecture attained its supreme beauty in the reign of _________.
A Babur
B Akbar
C Jahangir
D Shah Jahan

Hint: Mughal architecture was one of the prominent styles of architecture in India and during the Mughal rule in India magnificent buildings and monuments were created. The Mughals played an important role in enriching the architecture of India.

Complete answer: During the Mughal rule in India the art and architecture were at its peak in India. The Mughal architecture was an amalgamation of Islamic, Persian, Turkic and Indian architecture. The indo-Islamic architecture was the main characteristic feature of the Mughal Empire. The Mughal art and architecture highly flourished under the reign of Emperor Akbar. One of the most beautiful constructions was the tomb of his father Humayun which was constructed in Delhi.
Under the rule of Jahangir, the Mughal architecture became more Persian and attained its supreme beauty in the Persian style of architecture. One stellar example of the Persian style of architecture is the Jahangir’s mosque in Lahore which is constructed in Persian style and is covered with tiles. The tomb of Itmad-ud-Daula which is located in Agra also speaks volumes of Persian style of architecture. It was built with white marbles and highly polished stones were also in use for construction. Not only Akbar and Jahangir but during the reign of Shah Jahan, the Mughal art and architecture continued to shine. The construction of Taj Mahal, one of the seven wonders of the world is the finest example of this.
Therefore, under the reign of Jahangir, the Persian style of architecture was mostly used, so option C is the correct answer.

Note: The prosperous art and architecture of Mughal empire which flourished under Humayun, Akbar, Jahangir and Shah Jahan saw a decline when Aurangzeb became the ruler of the Mughal empire.