Answer:
Primary
Explanation:
The primary group of social organization is the group which a person is close to as in they share a close bond, feelings, and have enduring relationships.
The secondary group is the group of people who a person is not so close to they do not share their feelings and interact at a surface level.
Krista's group of college friends have a strong sense of loyalty and care about one another.
Hence, the statement here is referring to primary group.