Final Answer:
The action not protected under the federal Fair Housing Act of 1968 (Title VIII) is demonstrating a property to a potential buyer in a particular neighborhood based on the buyer's race or religion.
The correct answer is option d. showing a buyer a property in a specific neighborhood, because of the buyer's race or religion.
Step-by-step explanation:
The Fair Housing Act prohibits discrimination in the sale, rental, and financing of housing based on race, color, religion, sex, or national origin. Therefore, it is illegal to discriminate against a buyer by showing or not showing a property based on their race or religion. The Act aims to ensure equal housing opportunities for all individuals and promotes fair and open access to housing without regard to certain protected characteristics.
A. Refusal to rent to an unmarried couple could be considered discrimination based on marital status, which is protected under the Fair Housing Act.
B. Requiring an extra security deposit based on the tenant's religion is discriminatory and not protected under the Fair Housing Act.
C. Redlining a neighborhood based on racial population is a discriminatory lending practice and is not protected under the Fair Housing Act. Redlining involves denying loans or insurance to people based on their race or the racial composition of their neighborhood.
Therefore, the correct answer is option d. showing a buyer a property in a specific neighborhood, because of the buyer's race or religion.