When initiating oxygen per mask to a client who is short of breath, the nurse hears a loud hissing sound after inserting the flowmeter into the wall outlet. Which should the nurse do next?

Adjust the flow rate to the prescribed liters per minute.

Attach the flowmeter to a humidification canister.

Assess the position of the mask on the client's face.

Release and reinsert the flowmeter in the wall outlet.