Answer: was said to have written the bulk of the standard chants, according to later legend.
Explanation:
Pope Gregory was one of the most influential popes there ever was and he is credited with pushing the realm of the Christian faith as well as the Papacy to greater heights.
Popular legend credits him with having written the majority of the Gregorian chant which is a body of chants used by the Roman Catholic church. For this reason the chant is named after him. Modern scholars have however come to believe that it is simply an amalgamation of Roman and Gallican chants.
A. because they turn opaque(white).
