Which of the following scenarios might indicate a violation of the Fair Housing Act?

Refusing to rent to someone based on race is a clear violation of the Fair Housing Act, which prohibits discrimination in housing based on race, color, national origin, religion, sex, familial status, and disability. This law aims to ensure that all individuals have equal access to housing opportunities without facing prejudice or bias due to these protected characteristics.

In this scenario, if a landlord makes a decision not to rent based solely on an applicant's race, it directly contravenes the principles laid out in the Fair Housing Act and demonstrates discrimination. This type of behavior not only undermines the rights of the individual seeking housing but also perpetuates systemic inequality in housing opportunities, which the Fair Housing Act seeks to eliminate.

Other scenarios, such as a landlord's refusal to repair a faucet or increasing rent for existing tenants, may involve issues of tenant rights or rental agreements but do not specifically target protected classes as set forth in the Fair Housing Act. Allowing a tenant to have a pet dog generally addresses pet policies rather than discrimination, making it unrelated in context to the provisions aimed at ensuring fair housing.