Final answer:
The nurse should suspect that the child was abused if the child has visible bruises on other body parts.
Step-by-step explanation:
The action that should make the nurse suspect that the child was abused is option d) The child has visible bruises on other body parts. Physical abuse in children can result in visible bruises or injuries on different parts of their body. In this case, if the child has bruises on other body parts apart from the dislocated shoulder, it suggests that the child may have been physically abused. It is important for healthcare professionals to be alert to signs of abuse and to report any suspicions to the appropriate authorities.