Which Argument Best Justifies the Use of Certain Religious Phrases

Which argument best justifies the use of certain religious phrases or customs in political and public life?

A) Such phrases and customs have been widely accepted and used throughout history.
B) Most of the population agrees with Christianity, so it is not offensive.
C) The nation was founded upon the Christian religion, and as such, it should be celebrated.
D) The decline in religious beliefs must be reversed through government intervention.