Answer :
The results of the research on the configuration of friendships formed between residents of a housing project illustrate the impact of functional distance on friendship formation.
What is functional distance?
Corresponds to a probability that people keep in touch with others in relation to the physical proximity in which they are, such as their residences and common meeting points.
Therefore, functional distance influences unplanned social interaction, with the development of interpersonal relationships through physical proximity with someone.
The correct answer is:
C. Functional distance
Find out more about interpersonal relationship here:
https://brainly.com/question/1186080