Who made Mardi Gras a Catholic celebration?

The choice that identifies Pope Gregory XIII as the individual who made Mardi Gras a Catholic celebration is correct. This designation is closely linked to the establishment of the Roman Catholic liturgical calendar, which included the celebration of Mardi Gras as a day of feasting and festivity before the onset of Lent, a period of fasting and penance.

Pope Gregory XIII is notably recognized for reforming the calendar and promulgating the Gregorian calendar in 1582, influencing various cultural and religious observances, including those connected with Mardi Gras. This reformation helped standardize the timing of religious celebrations throughout the Catholic Church, which included the tradition of celebrating Mardi Gras.

Other choices, while historically significant figures in the Catholic Church, either do not have a direct connection to the establishment of Mardi Gras as a Catholic celebration or were not involved in calendar reforms that would have influenced such observances. Understanding the role of Pope Gregory XIII provides insight into the integration of cultural festivities with religious observance within Catholicism.