Question

if a fire starts in an open pan
cover the pan quickly with a lid.
throw the pan in the sink.
douse the pan with water.
take the pan off the range.

Explanation:

A pan fire requires smothering oxygen to safely extinguish it. Water will spread oil/grease fires, moving the pan risks spreading fire, and removing it from the range does not stop the fire. Covering with a lid cuts off oxygen to the flame.

Answer:

Cover the pan quickly with a lid.