A broker is working with a family which is multiracial. The broker only shows properties located in multiracial neighborhoods. Even though the broker thinks they are doing the family a favor, this is violating the Fair Housing Act prohibition against

Redlining refers to the practice of denying or limiting financial services to specific neighborhoods based on racial or ethnic composition, often leading to disinvestment in those communities. While redlining is a serious violation of fair housing laws, it specifically concerns access to loans and insurance rather than the behavior of real estate agents in showing properties.

Disparate treatment involves treating individuals differently based on protected characteristics, such as race or color, resulting in discriminatory outcomes. While the broker's actions could be viewed as disparate treatment, the specific act of directing clients toward particular neighborhoods based on race is more accurately described as steering.

Blockbusting involves inducing homeowners to sell their properties at lower prices by suggesting that the demographic makeup of the neighborhood is changing unfavorably. While blockbusting is a discriminatory practice, it differs from the act of steering, which is focused on the broker’s selection of properties shown to clients based on their race.