The correct answer is (c) Skandagupta.
The Hunas were a nomadic people from Central Asia who invaded India in the 5th century AD. They were a formidable force and defeated the Gupta Empire, which was the dominant power in India at the time. Skandagupta was the Gupta emperor who led the resistance against the Hunas. He was a successful military leader and was able to repel the Huna invasion. However, the Gupta Empire never fully recovered from the Huna invasion and eventually collapsed in the 6th century AD.
Chandragupta-II was the Gupta emperor who ruled before Skandagupta. He was a successful ruler and expanded the Gupta Empire. However, he died before the Huna invasion and Skandagupta was left to deal with the threat.
Kumargupta-I was the Gupta emperor who ruled after Skandagupta. He was a weak ruler and the Gupta Empire began to decline during his reign.
Budhagupta was the Gupta emperor who ruled after Kumargupta-I. He was a capable ruler but he was unable to stop the decline of the Gupta Empire. The Gupta Empire finally collapsed in the 6th century AD.