Option c is the correct answer. Ghiyasuddin Tughluq is credited as the first ruler of the 14th century to initiate irrigation projects. He embarked on significant infrastructure ventures, constructing canals to enhance agriculture by connecting Yamuna with Ghaggar and Sutlej rivers. In addition to irrigation, his reign witnessed the construction of bridges, madrasas, mosques, and other Islamic structures, showcasing his commitment to both agricultural and architectural advancements.