The correct answer is: The principle illustrated here is: Communication is contextual.
There are a few contexts included in this principle and they are:
1) Psychological (our emotions, mood). Our feelings and the feelings of people we communicate with influence how we communicate.
2) Situational - The way in which we communicate depends on the situation we are in; we communicate differently at school, a cafe, at home, etc.
3) Cultural - Our way of communicating depends greatly on the culture we were raised in, as different cultures communicate in completely different manners sometimes.
4) Relational - Our communication also depends on the relationship we have with the person we are talking to. We speak differently to our parents, teachers/ professors, coworkers, grandparents, etc.