The answer would be: <span>d. biology, culture, and behavior
Biology refers to everything that derives from our genetics, which give differenc characteristics between each person.
Culture refers to the set of belief that is held dearly by people within a certain social group, and behaviors refers to how we deal with our emotions.</span>
I agree that the answer is probably letter C because industrialism wasn't particularly popular in Southern states during that time. Also, Southern states during this time typically have a countryside characteristic which defines the word rural and rural is an antonym of urban.
Answer:
The United States has an open class system based on social mobility that includes all of the above which is option D, meaning that social mobility is quite high, where it is possible to move up and down different social classes.
Explanation:
What sentence?
try coping and pasting the whole question on here