Correct Answer: (c) Gupta
Solution:Gupta period in ancient India is considered as the golden age due to the excellent development in the field of art and culture. The Gupta period, which lasted from approximately 320-647 CE, was a time of significant cultural and scientific advancement in India. The Gupta period was a time of great creativity, with celebrated writers like Kālidāsa influencing generations of writers. The Gupta period saw important discoveries in mathematics and astronomy, including the theory that the Earth rotates on its own axis and the calculation of the solar year. The Gupta rulers developed an efficient administrative system that decentralized governance and gave provinces more autonomy. The Gupta Empire was a vast Hindu empire that covered much of the Indian subcontinent. Some of the empire's most powerful rulers were Chandragupta I, Samudragupta, Chandragupta II, and Skandagupta.