Which of the following is an additional protected class under Illinois law?

In Illinois, an additional protected class under state law includes sexual orientation. While federal law provides certain protections against discrimination based on race, color, religion, sex, and national origin, Illinois adds more categories that are specifically protected within its Fair Housing Act.

Sexual orientation encompasses discrimination based on an individual's sexual identity or preference, which is not clearly addressed under federal law. This broader scope ensures that individuals cannot face discrimination in housing based on their sexual orientation, promoting equal rights and opportunities within the state.

The other options—disability, national origin, and familial status—are indeed protected classes under both federal and Illinois laws, but sexual orientation is the one that specifically represents an additional layer of protection uniquely found within state law, emphasizing Illinois's commitment to inclusive practices in housing and real estate.