Final answer:
By not promoting individuals from historically marginalized communities, Lansing and Brett are practicing discrimination, which refers to the unfair treatment of people based on characteristics like race or gender.
Step-by-step explanation:
By not promoting people from historically marginalized groups, Lansing and Brett are practicing discrimination. Discrimination in the workplace can occur when individuals or groups are treated unfairly based on characteristics such as race, gender, or religion. In this context, it refers to the practice of denying job opportunities or promotions to people from historically marginalized communities, despite having comparable skills and qualifications as measured by education, experience, and expertise. It is an exclusionary ideology that can have severe impacts on the professional and personal lives of those affected. To combat workplace discrimination, comprehensive policies and regulations like the Civil Rights Act of 1964 have been implemented to encourage equality and prevent unequal treatment.