Which of the following terms refers to discrimination against families with children?

The term that specifically refers to discrimination against families with children is "familial status." This term is codified within the Fair Housing Act, which prohibits housing discrimination against families with children under the age of 18. The inclusion of familial status as a protected category recognizes the rights of families to seek housing without facing discrimination based on the presence of children. The legislation aims to create equal opportunities for families seeking housing and to ensure that they are not unjustly excluded or segregated because of their family composition.

Other terms, while related to the broader context of fair housing, do not specifically denote discrimination against families with children. "Equal housing opportunity" refers to the overall principle that everyone should have equal access to housing. "Protected class" is a general term that encompasses any group legally protected from discrimination, which includes several categories beyond just familial status. "Fair market value" pertains to the value of a property based on its current market conditions and is unrelated to discrimination issues.