Final answer:
Individuals with a history of medical conditions are unlikely to be exempt from the Affordable Care Act's individual mandate. Those with religious exemptions, low income, or employer-sponsored coverage may be exempt or already comply with the mandate.
Step-by-step explanation:
Among the options given, the group that is unlikely to be exempt from the Affordable Care Act's (ACA) individual mandate is 'Individuals with a history of medical conditions.' The ACA specifically provides coverage for individuals with preexisting conditions, and their medical history cannot exempt them from the mandate. On the other hand, individuals with religious exemptions and those with low income may be exempt under certain circumstances. Additionally, individuals with employer-sponsored coverage typically meet the mandate's requirements because their employers are often required to offer insurance.