What was one reason the Catholic Church became less powerful in the 14th and 15th centuries?
A. The church was left without a pope for decades after one failed to
name a successor
B. The Ottoman Empire took over much of Europe and required the
practice of Islam.
C. Arguments between church officials, such as the Western Schism,
hurt its image.
D. A large portion of the European population emigrated to the
Americas.

It's C (Arguments between church officials, such as the Western Schism,

hurt its image.)

Explanation:

Church officials argued about whether Jesus was a historical figure, hurting the church's image.

hope this helps :)

Arguments between church officials, such as the Western Schism, hurt its image.

Explanation:

Church officials argued about whether Jesus was a historical figure, hurting the church's image. New laws in many countries forbade the church from owning land or collecting taxes from the people.

use wikipedia, i think they have this.