C. children returning to their parents' house during adulthood. if this is one of the answer choices it should be correct.
This generation of young adults has sometimes been labeled the “boomerang generation” for its proclivity to move out of the family home for a time and then boomerang right back. Depending on which environment they live in the might not have enough money to make it on their own like they thought they could this is why they go back to their parents.
