In the focus is on social interaction. microsociology behavioral sociology macrosociology order theory

The answer is sociology as this is focused more on social interactions as this studies an individual or a group in terms of their structure their function in the environment and in the society as well as the relationships they build.

answer; have joints that fail from excess by early the accumulated effects of unnoticed infections,all of these things are possible for a person born without the ability to feel pain;