Which of the following describes sexual abuse of a child?

The description of sexual abuse of a child is accurately captured by the phrase "indecent exposure or forcible acts." This option appropriately encompasses the various forms that sexual abuse can take, including any sexual act or exploitation committed against a child. It highlights both acts of exposing a child to inappropriate sexual content and forcible sexual acts, both of which are clear violations of a child's safety and rights.

Understanding sexual abuse in this context is vital for identifying and preventing harm. It distinguishes sexual abuse from other types of abuse, such as physical harm, emotional mistreatment, or neglect, which are reflected in the other choices. Each of those forms of abuse impacts a child's well-being, but they do not specifically define the sexual abuse category in the same concrete manner as indecent exposure or forcible acts do. Thus, focusing on the precise nature of sexual abuse as indicated in the correct answer helps in identifying, reporting, and taking preventive measures regarding such heinous acts against children.