In families, middle-aged adults tend to function as the ___, celebrating family achievements, keeping the family together, and staying in touch with distant relatives.

Keen keepers

Explanation:

Keen keepers are the family members who put all family members together. Mostly the women play the role of the keen keeper because they call all the family members at any event and make contact with their relatives. They were very consistent with their role as a keen keeper. Women's happiness also sees related to the role of keen keepers in the USA.

Thus in families middle-aged adults, the women play the role of the keen keeper. They celebrated the family achievement, to keep the family together, and to stay in touch with relatives.