The correct answer is: C. Kanishka
The Fourth Buddhist Council was convened by Kanishka, the Kushan emperor, in the 1st century CE. The council was held in Kashmir, and it was attended by over 500 monks. The purpose of the council was to discuss and resolve differences in the Buddhist teachings. The council also produced a new version of the Buddhist scriptures, which is known as the Sarvastivada.
Ashoka was the Mauryan emperor who ruled over most of India in the 3rd century BCE. He was a devout Buddhist, and he is credited with spreading Buddhism throughout India. However, there is no evidence that he convened a Buddhist council.
Menander was a Greek king who ruled over parts of India in the 2nd century BCE. He was also a devout Buddhist, and he is said to have converted to Buddhism after meeting with the Buddhist monk Nagasena. However, there is no evidence that he convened a Buddhist council.
Huvishka was the Kushan emperor who ruled over parts of India in the 2nd century CE. He was a devout Buddhist, and he is credited with building many Buddhist stupas and monasteries. However, there is no evidence that he convened a Buddhist council.
The Fourth Buddhist Council was a significant event in the history of Buddhism. It helped to unify the Buddhist teachings and to spread Buddhism throughout India.