A nurse is caring for a 4-year-old child who is nonverbal following a tonsillectomy. The child is grimacing, drawing up their legs, and crying inconsolably. The nurse needs to assess the child's pain level using an appropriate tool. Which pain assessment tool is most appropriate for this child?
- Wong-Baker FACES scale
- Visual analog scale (VAS)
- Numeric rating scale (0–10)
- FLACC scale