Step 1: Understanding the Question.
The question is looking for the sociology term that names the overall network of relationships that connects the people in a society.
Step 2: Key Concept or Approach.
Social structure is defined as the organized set of relationships and connections among individuals, groups, and institutions that make up a society. It is the framework that holds people's roles and interactions together.
Step 3: Detailed Explanation.
Social structure covers things like family, kinship, work groups, and institutions, and how they relate to one another, so it fits the question directly.
Social stratification is a different idea. It means arranging people into layers, such as by class, income, or status, rather than describing the whole web of relations between them.
Caste system is one specific, India based form of social stratification, based on birth. It is too narrow to be the general answer here.
Herd structure is not a standard sociology term for human society, it is more an animal behavior idea, so it does not fit at all.
Step 4: Final Answer.
The pattern of inter-relations between persons in a society is called social structure.