Final answer:
The NRP Quick Equipment Checklist indicates that the flowmeter should be set to 10 L/min for proper ventilation preparation.
Step-by-step explanation:
When preparing for ventilation, according to the NRP Quick Equipment Checklist, the flowmeter should be set to 10 L/min. This setting ensures that there is adequate flow to provide effective ventilation without causing excessive pressure or volume that could potentially harm the patient's lungs.