Two or more people coming into contact on a social level is the definition of:

The correct answer is B. interaction.

Interaction refers to the way in which two or more individuals communicate or engage with each other socially. It encompasses various forms of connection, including verbal and non-verbal communication. While “interpersonal” (option D) also relates to social interactions, the most precise term for the action of people coming into contact on a social level is “interaction.” If you have any more questions or need further clarification, feel free to ask!