Social interaction is .a. the way in which a society is organized into predictable relationships. b. the process of learning norms, values, beliefs, and other requirements for effective participation in social groups. c. the ways in which people respond to one another. d. a series of relationships linking a person directly to others and therefore indirectly to still more people.

c. the ways in which people respond to one another.

Explanation:

Social interaction is the way in which one person responds to another. It can also be examined between two, three or maybe larger social groups. Normally, it relates to those types of face to face meetings in which people are physically existing with one another for a particularized time. However, in modern civilization, we can also think of social meetings that are technological like skyping,  texting or messaging, etc.