I would chose D given what the passage shown is discussing. It is discussing state laws and what determines ones race. This is how i came to my conclusion.
A main current or a stream of liquid or gas
Explanation:
Once an introductory APR for purchases ends, the portion of your balance that comes from new purchases will be assigned a new APR and start to accrue interest at that rate. The specific rate you'll be charged will depend on your creditworthiness, and will be assigned when you're approved for your card.
