Recall that festinger and his colleagues (1950) conducted research at a university housing project called westgate west. among other things, they examined friendship formation among apartment residents. the results showed that the residents living near the stairwells formed twice as many friendships with upstairs neighbors as those living in the middle apartments, which were further from the stairs.
these results illustrate the impact of on friendship formation.

Functional distance

Explanation:

 According to the given situation, the impact of the functional distance best illustrate about the friendship formation result.

The functional distance is basically refers to the physical distance between two people due to the architecture or the location according to the social psychologist.

The functional distance is basically defined as the arrangement of the residential facilities that influenced the social interaction and common mailboxes are one of the example of the physical distance.

Therefore, Functional distance is the correct answer.  

the correct answer is "hematoma formation, with ligaments that are stretched, partially, of fully torn" ankle sprain are produced by an injury to the tough bands of tissue (ligaments) that surround and connect the bones of the leg to the foot. this causes several damage to the ankle including hematoma formation and ligament injury .

levels of production can be increased by technology while holding labor and capital constant, because increased technology makes the production process more efficient. subsequently, the lras curve is almost a vertical line, that can shift to the right, with an increase in technology.

the relationship between the lras curve and the ppc is that both can make the economy could grow. the ppc achieves that when it shifts outward because of more resources or technological advances while the lras curve shifts if more resources are developed or if there are technological advances.

the lras curve is a vertical line at an output level that represents the number of goods and services a nation can produce over a sustained period using all of its productive resources as efficiently as possible with all of the current technology available to it.

the production possibilities frontier (ppf) is a graphical device that is used for economic analysis of production decisions because the ppf measures the maximum possible combinations of two goods that an economy is capable of producing with its currently available resources and technology.