Final answer:
The best approach to obtain a urine specimen from a 4-year-old with a suspected urinary tract infection is to use clear and child-friendly language, such as "Let your mom help you tinkle in this cup."
Step-by-step explanation:
The best approach when attempting to obtain a urine specimen from a 4-year-old with a suspected urinary tract infection is to use clear and child-friendly language. Option B, "Let your mom help you tinkle in this cup," would be the most appropriate choice. This approach addresses the child directly, acknowledges the presence of their caregiver, and uses a familiar word for urination to put the child at ease.