The concept that suggests that your roommate is more likely to become your friend than a person ten blocks away is known as

The concept that suggests that your roommate is more likely to become your friend than a person ten blocks away is known as "proximity".

Explanation:

Proximity means nearness or closeness and it states that the objects or people which are close or near to each other have more possibilities of being grouped together. we see in our daily life that we are more close to our neighbors than the people who live in the other street.

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