The correct answer is: a) Kanishka.
Kanishka was the second Kushan emperor, who ruled from 127 to 150 CE. He was a great patron of arts and literature, and his reign saw a flowering of Buddhist culture in the Kushan Empire. Kanishka is also credited with spreading Buddhism to Central Asia and China.
Ashoka was the third Mauryan emperor, who ruled from 272 to 232 BCE. He is known for his Buddhist reforms and his promotion of non-violence. Ashoka’s reign saw a great expansion of the Mauryan Empire, and he is considered one of the greatest rulers in Indian history.
Chandragupta II was the second Gupta emperor, who ruled from 375 to 415 CE. He is known for his military conquests and his patronage of arts and literature. Chandragupta II’s reign is considered a golden age in Indian history.
Harshavardhana was the sixth ruler of the Vardhana dynasty, who ruled from 606 to 647 CE. He is known for his military conquests and his patronage of arts and literature. Harshavardhana’s reign is considered a golden age in Indian history.
Kanishka was the most important Kushan ruler, and his reign saw a flowering of Buddhist culture in the Kushan Empire. He is also credited with spreading Buddhism to Central Asia and China.