As a genre， naturalism emphasized（） as important deterministic forces shaping individualized characters who were presented in special and detailed circum-stances.

As a genre， naturalism emphasized（） as important deterministic forces shaping individualized characters who were presented in special and detailed circum-stances.
A、theological doctrines
B、heredity and environment
C、education and hard work
D、various opportunities and economic success
正确答案：B