Answer:
Option 4 is correct.
Step-by-step explanation:
Okay, let us start by considering the first option,that is option (1). ''Posting a patient's bill of rights and nondiscrimination policies visibly''. This is okay and it is a job well done by the student nurse, because there should not be any form of discrimination against lesbian, gay, bisexual, transgender, and queer/questioning as required.
Options (2) and (3) are also fine and do not need revision. But, option (4) statements; ''Arranging exclusive waiting rooms for LGBTQ patients and their families'' is discrimination and this need revision.