All men are created equal and are endowed by their creator with certain unalienable rights, that among these are, life, liberty and the pursuit of happiness!
The Social Gospel Movement originated during the second half of the 19th century. Its main ideas that good actions led to salvation, as people must emulate the life of Jesus Christ in their day to the activities. American Theoolgist Walter Rauschenbusch was one of the main representatives of this movement.
On the other hand, the progressive movement proposed the idea that of improving society by implementing reforms in education, safety and health that would lead to people's overall well-being, as this was seen as the ultimate goal of progressivism.
The difference between the two movements resides in the fact that the Social Gospel Movement encouraged good acts in the name of Christ, while Progressivism encouraged good efforts for the good of mankind, regardless of any belief.
The correct answer to this open question is the following.
Although the question is incomplete because it does not provide a specific reference about the author of the letter or any other reference, we can comment on the following.
A primary source is the piece of information that was written by a character or an individual that lived in the moment of the event, was part of the event, or witnessed the event. This individual could have written a letter, or a document -including a book. Or he/she took a photograph. Or was part of an interview. The secondary source includes information from a third person who was not part of the time or event but has found information through other resources. It is the case of an encyclopedia or researchers/historian books.
First, they wanted to stay out, then they started to help England and France, and finally when Japan attacked they totally got involved.
The correct answer is, C for this answer