Which of the following actions is NOT considered discriminatory?

The action related to the private club giving preferences to its members for housing is not considered discriminatory in the context often defined by fair housing laws. Such preferences are allowed within private organizations that operate under their own rules and membership criteria. Private clubs have the right to control their membership, which can include certain housing options as part of their benefits.

In contrast, the other actions involve clear violations of anti-discrimination laws. For instance, forbidding a broker from showing properties to minorities or refusing rental to women are explicit forms of discrimination based on race and gender, both of which are protected categories under fair housing legislation. The church's refusal to lease to non-members can also be seen as discriminatory, particularly if their membership practices exclude certain groups. Therefore, the preference given by a private club does not infringe upon these protected classes, making it the option that is not discriminatory.