By 1500 what was the dominant religion

What is an important step to prove something is valid or not? determining the reliability observing research testing

So i have a lot of answers answered but it says i still need to answer more questions. why is it doing that? how many questions need to be answered?

What should be changed to make the following sentence true? "the stress model suggests that people with a predisposition for a disorder are more likely to develop the disorder when faced with stress."