Final answer:
The patient had a total intake of 540 mL. After converting milliliters to liters by dividing by 1,000, the nurse should document 0.54 liters option (b) as the patient's total intake.
Step-by-step explanation:
The patient had a total intake of 540 mL (240 mL of milk + 180 mL of apple juice + 120 mL of water) with the 10 AM medications. To convert milliliters to liters, we divide the total milliliters by 1,000. Thus, the total intake in liters is:
540 mL รท 1,000 = 0.54 L
Therefore, the nurse should document 0.54 liters option (b) on the intake and output form.