The correct answer is context.

• Interpersonal communication is the communication between two or more persons.
  • It leads to strong feedback communication.
  • It maintains close and long-lasting relationships.
  • It is also called Dyadic Communication. 
  • For example - Communication between two co-workers.
  • This interaction relates to their mutual interests, ideas, behavior, thoughts, likes, dislikes, etc.
  • It is one of the easiest ways of communication.

• Interpersonal communication is influenced by the context.
• This context can be both situational and social.
• Situational Context:
  • It deals with where the interaction is going on.
  • That is in a room, hall, or outdoors.
• Social Context:
  • It deals with the roles and responsibilities of the participants in the communication.
• If both the context is not properly defined, then it will act as a barrier in communication.

• Abstraction:
  • It refers to those concepts which are not experienced by one's senses.
• Flexibility:
  • It means acting or behaving differently in different situations.
  • It gives oneself the power to influence others.
• Displacement:
  • It refers to interacting about that situation that is not present here right now.