Which action is prohibited under the Fair Housing Practices Act?

The Fair Housing Practices Act is designed to prevent discrimination in housing-related matters based on certain protected classes, including race, color, religion, sex, national origin, familial status, and disability. Option B addresses the prohibition against requiring an extra fee from an occupant with an assistive animal, which is directly linked to the rights of individuals with disabilities.

Under this law, individuals who require service animals are entitled to certain accommodations without incurring additional fees or deposits. This is crucial for ensuring equal access to housing for people with disabilities. Therefore, imposing an extra fee for an assistive animal would be a discriminatory practice, violating the principles set forth in the Fair Housing Practices Act.

In contrast, other options, such as discrimination based on race or favoring applicants with higher income, touch on broader discriminatory practices but may not directly align with specific prohibitions like the one concerning assistive animals. Additionally, providing special assistance to first-time homebuyers is generally encouraged and does not constitute discrimination. Thus, the core aspect of the question highlights the specific prohibition against extra fees for those with assistive animals, underscoring the Act's intent to facilitate fair housing practices for individuals with disabilities.