American scene paintings came into being because It captured the happenings of the decade of the late 20s and 30's during the Great Depression.
It was a style of art that focused on using American imagery as a form of realistic art. This meant that American landscapes, homes, and people were used as art subjects.
It started in the late 1920s as the Great Depression set in and led to many wretched areas appearing in the United States that looked good as paintings.
In conclusion, option A is correct.
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