Final answer:
The Wong-Baker FACES pain scale is indeed used on children to help them express their pain levels using a series of faces, and this statement is true.
Step-by-step explanation:
The statement that the Wong-Baker FACES pain scale is used on children is true. This pain assessment tool features a series of faces ranging from a happy face at one end, which represents no pain, to a crying face at the other end, symbolizing extreme pain.
The Wong-Baker FACES scale is specifically designed for children to help them communicate their level of pain in a way that is easy for them to understand and for healthcare providers to interpret.