The correct answer is "गुप्त". The Gupta period in India, which lasted from the 4th to the 6th century AD, was known for its significant advancements in art and architecture. During this time, temple construction and art flourished, with the development of the Nagara style of temple architecture. The Gupta rulers were great patrons of art and supported the construction of numerous temples across the country. These temples were known for their intricate carvings, sculptures, and architectural grandeur, making the Gupta period a significant milestone in the history of temple construction in India.