Which of the following is an example of sexual abuse?

B is the correct choice because rubbing up against a resident inappropriately constitutes a physical act that violates the resident's personal boundaries and can lead to feelings of violation or discomfort. This behavior is a clear example of sexual abuse, as it involves unwanted physical contact that is sexual in nature. Such actions undermine the dignity and safety of the resident, which is a fundamental aspect of care in a nursing environment.

Inappropriate comments, while certainly disrespectful and potentially harmful, may not always meet the legal definition of sexual abuse without accompanying physical contact or more severe implications. Ignoring a resident's requests relates more to neglect or emotional abuse, as it involves failing to provide proper care or respond to the needs of the resident. Similarly, restricting a resident's movements pertains to a lack of autonomy and could be classified as physical abuse or confinement rather than sexual abuse specifically.