Final answer:
Renting only first-floor apartments to families with toddlers rather than apartments with balconies on higher floors is a discriminatory practice prohibited under the Fair Housing Act of 1968.
Step-by-step explanation:
The practice of renting only first-floor apartments to families with toddlers rather than allowing them to rent apartments with balconies on upper floors can be considered a discriminatory practice. This type of discrimination is not blockbusting, which refers to the practice of inducing panic selling based on racial prejudices, nor is it redlining, which deals with the denial of services based on racial demographics. Discrimination in housing based on family status (such as having toddlers) is prohibited under the Fair Housing Act of 1968, which aims to eliminate differential treatment of potential renters or buyers.