The correct answer is (a) Devaraya.
Devaraya I was the third ruler of the Vijayanagara Empire. He was a great patron of art, architecture, and literature. He also built a large dam across the Tungabhadra River and a canal-cum-aqueduct several kilometers long from the river to the capital city.
Mattikarjuna was the sixth ruler of the Vijayanagara Empire. He was a weak ruler and was not able to maintain the power and glory of the empire.
Vira Vijaya was the seventh ruler of the Vijayanagara Empire. He was a brave and capable ruler, but he was not able to stop the decline of the empire.
Virupaksha was the eighth ruler of the Vijayanagara Empire. He was a weak and incompetent ruler, and the empire declined rapidly under his rule.
The Tungabhadra River is a river in India that flows through the states of Karnataka and Andhra Pradesh. It is a tributary of the Krishna River. The river is about 700 kilometers long.
The canal-cum-aqueduct is a water supply system that was built by Devaraya I. It is a large canal that carries water from the Tungabhadra River to the capital city of Vijayanagara. The canal is about 100 kilometers long.