Which of the following principles involves people wanting to feel included?

The principle that involves people wanting to feel included is consensus. This principle highlights the human tendency to look towards the behavior and opinions of others when making decisions. When individuals see that a majority is participating or supporting a particular action or idea, they are more likely to feel a sense of belonging and inclusion within that group. This desire for inclusion can significantly impact decision-making and social interactions, driving individuals to align with the groups they identify with or wish to be a part of.

In the context of communication and persuasion, leveraging the consensus principle entails showcasing how many others are involved or on board with an idea or action, which can create a compelling sense of community and acceptance that influences behavior.