Final answer:
The state with the greatest pressure gradient force is 2. Colorado due to the Rocky Mountains creating a significant pressure gradient.
Step-by-step explanation:
The state with the greatest pressure gradient force is 2. Colorado.
The pressure gradient force is the force that drives air from areas of high pressure to areas of low pressure. In general, regions with steep pressure gradients experience faster wind speeds.
In Colorado, the Rocky Mountains create a significant pressure gradient due to the dramatic changes in elevation. This results in strong winds and rapid weather changes in the state.