Which additional protections were established by subsequent legislation to the Civil Rights Act of 1964?

The additional protections established by subsequent legislation to the Civil Rights Act of 1964 include age, gender identification, sexual orientation, and disability. This expansion reflects a recognition of the need to protect various groups who may face discrimination in different areas of public life, such as employment, housing, and public accommodations.

For instance, the Age Discrimination in Employment Act of 1967 protects individuals from employment discrimination based on age, particularly for those who are 40 and older. The Americans with Disabilities Act of 1990 focuses on preventing discrimination against individuals with disabilities and ensuring they have equal opportunities. Gender identity and sexual orientation protections have also been increasingly recognized through various laws and judicial interpretations, reflecting societal changes in understanding these aspects of identity.

The other options, while they list various forms of discrimination, do not directly align with the legislative progress made following the Civil Rights Act of 1964 in terms of widely recognized protections applicable at the federal or state level. Specifically, the first option lists the original categories included in the Civil Rights Act itself. The remaining options refer to more specific or less universally applicable categories that have not been established as standard protections through landmark legislation in the same way as those in the correct answer.