The answer would be 'competition among consumers increases prices' because if there was a limited amount, if someone really wants that game, they'd pay more than usual when supplies sold out.
Sugar Act. First meant to raise colonial money for the crown.
Currency Act. Prevented colonists from issuing their own currency.
Quartering Act. The colonists are forced to provide barracks and supplies to British troops.
Stamp Act. The British began taxing newspapers, almanacs, pamphlets, broadsides, legal documents, dice, and playing cards. The "stamp" was to signify a priorly mentioned product's tax was paid.
The answer is A.
Federal Laws that are against the constitution are not valid. Judges determine which laws are unconstitutional in the process of Judicial Review.