Final answer:
Vincent de Paul was the priest of the Catholic Reformation who worked to help the poor people in Paris. He founded the Congregation of the Mission and the Daughters of Charity religious orders to provide social services and assistance.
Step-by-step explanation:
The priest of the Catholic Reformation who worked to help the poor people in Paris was Vincent de Paul. Vincent de Paul, also known as Saint Vincent de Paul, was a French Catholic priest who dedicated his life to serving the poor and marginalized. He founded the Congregation of the Mission and the Daughters of Charity religious orders, both of which focused on providing social services and assistance to those in need.