Correct option is D
Samudragupta, the great Gupta emperor, is known for his benevolent rule and patronage towards different religions, including Buddhism. It was under his reign that permission was granted for the construction of a Vihara at Bodhgaya for Sinhalese monks. This move further established the importance of Bodhgaya as a significant religious site for Buddhists around the world. Samudragupta's support for religious institutions, along with his military and administrative prowess, helped in the spread of Buddhism during his reign.
