The correct answer is "The Israelites received a set of moral laws that showed the people how to behave."
One of the reasons that Exodus is important to Judaism is because the Israelites received a set of moral laws that showed the people how to behave.
The passage refers to the Israelites Exodus, where Moses liberated the people of Israel from the Egyptians and spent 40 years searching for the promised land. Moses climbed the Sinai Mountain and at the very top of it, God gave him the tablets or the Ten Commandments. Those tablets became the foundation of the Jewish religion.