What are the subjects or themes that the American naturalists ch

What are the subjects or themes that the American naturalists chose for their works and what about their naturalistic writings?
【正确答案】：A. They chose their subjects from the lower ranks of society.
B.They portrayed misery and poverty of the "underdogs"who were victims of society and nature.
C. One of the most familiar themes is the theme of human "bestiality"as an explanation of sexual desire.