What groups of people were responsible for the large conversion rates when buddhism first emerged

Vedic faith:  In the era after 1500 BCE it is believed that the Indo-Aryans community had beliefs based on the teaching of a very ancient faith called as Vedism, which is also considered as the predecessor of Hinduism. As the folk living in the region of India and most of Europe had beliefs relating to Vedic faith.

Explanation:

When Siddhartha Gautama started preaching of Buddhism, it is believed that in that era the people in the region were no more following the Vedic faith, as most of them disapproved the Vedic faith. They wanted a new way to live there lives. For that Buddhism provided a more peaceful and flexible set of faiths to spend their lives with, as they were very much convinced by  Siddhartha Gautama teachings so they converted into Buddhists.

i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.

the correct answer is "c": the pillars proclaimed his regret at the bloodshed at the battle of kalinga and his conversion to buddhism.

the kalinga war is considered as one of the largest battles in the history of india. it was fought between the between the maurya empire, which ruled the lands of what is now known as india at the time, and the independent feudal kingdom of kalinga.

the army of maurya empire, led by its king ashoka, fought a prolonged war against kalinga. the war ended around 262 bce with the victory of the maurya empire. it is believed that ashoka, after having witnessed the loss of many lives during this war, felt deep responsibility and eventually converted into buddhism.