The practical nurse (PN) is completing a focused assessment on a client who is prescribed oxygen at 3 liters per minute by nasal cannula. Which assessment finding by the PN require immediate action?

O The cannula is presses snugly against the client's cheeks
O The flowmeter shows 1 liter of oxygen being delivered
O The client is lying in a supine position in the bed
O There is no humidifier attached to the delivery system