Answer:
The answer is racial discrimination.
Step-by-step explanation:
It is wrong for a bank to provide high interest loans to black Americans while providing lower number of such loans to white Americans in the same environment as this is called racial discrimination because of the color of the skin.
As stated in the question, when customers have low credit scores, banks often offer them subprime loans that have higher than normal interest rates. If a bank gives three times as many subprime loans to black Americans than to white Americans, even when they have the same credit scores, then the bank is guilty of racial discrimination.