It would be Canada's Atlantic Province of "Newfoundland" that has jurisdiction over mainly uninhabited Labrador, due mostly to the proximity of Labrador to Newfoundland relative to other bodies of land.
It was the Homestead Act, but it didn't usually end up going that well because the land being sold was often very poor in soil nutrients. People would exploit the system by putting a crude little garden plot on their land, collecting benefits, and selling it.
The expressed power the Supreme Court cited when it upheld the constitutionality of the Affordable Care Act (ACA) was: the power to tax.
Explanation
Even though the Supreme Court declared that the law could never be upheld, by a decision based on the regulatory power of Congress, the Court ended accepting that it was constitutional and valid for the Congressional power to tax, as a consequence, defending the individual mandate.
Answer to this question it seems to be "A".
