Final answer:
Turning 26 years old would disqualify a young adult from remaining on a parent's plan under the ACA provision. Getting married, obtaining a full-time job, or moving to a different state do not affect eligibility.
Step-by-step explanation:
You asked which of the following would disqualify a young adult from being eligible to join or remain on a parent's plan under the Affordable Care Act's provision that extends dependent coverage up to age 26. The only factor from the ones listed that would disqualify a person is turning 26 years old. Being married, obtaining a full-time job, or moving to a different state do not affect eligibility for this provision. The Affordable Care Act, also known as Obamacare, aimed to increase coverage for the uninsured, including those with preexisting conditions, and is funded through additional taxes and fees. Although parts of the ACA have been under scrutiny, the specific provision for children to remain on their parents' insurance until age 26 has not changed.