Which part of the mass had unchanging text regardless of the calendar date or festival?

A. Proper

B. Kyrie Dei

C. Sanctus Gloria

D. Ordinary

The correct answer is letter D. The Ordinary is the part of the mass that has unchanging texts regardless of the calendar date or festival being celebrated by the Catholic Church. The Ordinary is the part of the mass that is also contrasted to the proper, which varies according to the observance being held in the liturgical year.