Final answer:
The Americans with Disabilities Act (ADA) applies to certain types of multifamily units. It generally applies to buildings with at least four units, an elevator, or accessible ground floor units.
Step-by-step explanation:
The Americans with Disabilities Act (ADA) applies to multifamily units that meet certain criteria. In general, the ADA applies to any multifamily unit that is part of a building that has at least four units and has an elevator or ground floor units that are accessible. This means that buildings like apartment complexes, condominiums, and townhouses may be subject to the ADA if they meet these requirements.