The nurse is discussing sensory development with the mother of a 2-year-old boy. Which parental comment suggests the child may have a sensory problem?
a) "I dropped a pan behind him and he cried."
b) "He doesn't respond if I wave to him."
c) "He was licking the dishwashing soap."
d) "He wasn't bothered by the paint smell."
Answer: "He doesn't respond if I wave to him."