Final answer:
The ancient group that believed emotions were inborn were the Greeks, specifically through the philosophical schools of the Stoics and Epicureans who explored the nature of emotions and the path to happiness. b. Greeks
Step-by-step explanation:
The group that believed emotions were inborn was the Greeks. Ancient Greek philosophers provided extensive contributions to the understanding of human emotions and behavior. While certain ideas might have been shared across multiple ancient cultures, it was the Greeks, particularly the Stoics and Epicureans, who prominently explored the concept of emotions being inherent to human nature. Influential figures such as Zeno and Epicurus believed that happiness and suffering were intertwined with how individuals managed their inborn emotions in response to life's events and their given fate.
The belief held by the Stoics is that the universe is governed by a divine reason, the Logos, and that a fulfilled life comes from accepting fate and learning how to deal with life's challenges. Epicureans, on the other hand, thought that pursuing pleasure and avoiding pain, both physical and mental, were the keys to happiness. These philosophical schools were part of a broader Hellenistic thought which shaped the intellectual landscape of Ancient Greece and later influenced Roman culture as well.