Final answer:
The assessment finding that requires further investigation is option (b) Urine output of 375 mL over 4 hours at 1500.
Step-by-step explanation:
The assessment finding that requires further investigation is option (b) Urine output of 375 mL over 4 hours at 1500. This finding indicates a low urine output, which may be a sign of kidney dysfunction or dehydration. It is important to investigate further to determine the cause and intervene appropriately.