Final answer:
The primary purpose of this regulation is to promote the availability of credit to all creditworthy applicants by preventing banks from discriminating and requiring them to disclose loan information.
Step-by-step explanation:
The primary purpose of this regulation is to promote the availability of credit to all creditworthy applicants. The regulation aims to ensure that all individuals who are considered creditworthy have access to credit, regardless of their race, sex, or marital status. This is done by forbidding banks from engaging in discriminatory practices and by requiring them to publicly disclose information about the loans they make and how those loans are distributed.