I think it is B because they need to purify the churches so therefore they can live with them.
The Painted Desert lies in Arizona.
The scientific method introduced a regular,systematic, reproducible investigation rather than opportunistic one. The hypothesis had to be clearly stated, which limited the chance of making a mistake due to unclear statement of hypothesis, and the methods had to be explicit and rigorously followed.
In short, it made the study of the natural world more organized and reliable.
World War II lasted 6 years