The correct answer is (c) Kanishka.
Kanishka was the most famous king of the Kushan Empire, which ruled over much of Central Asia and the Indian subcontinent from the 1st to the 3rd centuries CE. He was a great conqueror and patron of the arts, and his reign saw a golden age of Buddhist culture.
Kanishka is credited with issuing the first gold coins in the Kushan Empire. These coins were made of pure gold and were inscribed with his name and titles. They were used as a form of currency throughout the empire and are still found today in archaeological sites.
The other options are incorrect. Kujula Kadphisa was the founder of the Kushan Empire, but he did not issue gold coins. Wim Kadphisa was the son of Kujula Kadphisa and ruled the Kushan Empire for a short time. He did not issue gold coins either. Huviska was the son of Wim Kadphisa and ruled the Kushan Empire after him. He also did not issue gold coins.