A nurse is performing a developmental assessment on a 4-year-old client. What assessment finding would warrant further investigation?

A. Urinary and bowel continence is expected by age 4, so this does not warrant further investigation. B. Tying shoes is a skill typically developed later, around 5-6 years of age, so not being able to do so at age 4 is not concerning. C. Having an imaginary friend is common in children around this age and is not a cause for concern. D. Speaking in 2-3 word sentences is typical for a younger child, around 2 years of age. By age 4, a child should be able to speak in more complex sentences, so this finding warrants further investigation.