Answer:
Social dynamics (or sociodynamics) can refer to the behavior of groups that results from the interactions of individual group members as well to the study of the relationship between individual interactions and group level behaviors.
This is the Definition of sociodynamics.
the question seems incomplete. Please give the full question.
Answer:
Work documents.
Explanation:
Work documents are normally for your colleagues, manager and company related. Personal e-mails are for your family members, movie reviews don't really have to be formal and friendly letters are meant to be informal.