What was the main use for airplanes in World War I?

Airplanes enabled soldiers to observe troop movements and locations.
Airplanes allowed for the quick movement of resources.
Airplanes eliminated the need for soldiers in the trenches.
Airplanes decreased the significance of naval warfare.

Answer :The first use of airplanes in World War I was for reconnaissance. The airplanes would fly above the battlefield and determine the enemy's movements and position.

The first one, Airplanes enabled soldiers to observe troop movements and locations.

Explanation: The first use of airplanes in World War I was for reconnaissance. The airplanes would fly above the battlefield and determine the enemy's movements and position.

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