What Is a Social Graph

What is a social graph?

A) Represents the interconnection of relationships in a social network.
B) Maps group contacts identifying who knows each other and who works together.
C) Describes the collaborative activity of marking shared online content with keywords or tags as a way to organize it for future navigation, filtering, or search.
D) A keyword or phrase used to identify a topic and is preceded by a hash or pound sign (#) .