Which concept is stressed by social-conflict theorists? a. some social patterns are harmful to certain groups of people?

I believe the answer is: Some social patterns are harmful to certain groups of people.

Socially conflict theorist operate on the basic belief that people in a society would always be engaged in conflict due to the competition to obtain limited resources. During the process, some group of people would be trapped in a social pattern that might prevent them from advancing in society.

Example of the pattern:

Being a single mother - > had little time to both taking care of kids and work at the same time - > The children become neglected - > The children engaged in risky behaviours without the parent noticing - > the children got pregnant in their teenage years and the cycle continues.