Respuesta :
At the start of WWI, aircraft's were very basic. By the time WWI ended, aircraft's had become far more refined and had differentiated into fighters, bombers and long-range bombers.
Answer: The correct answer is : 1) The first aircrafts were unarmed and were used for gathering information.
Explanation: Airplanes such as B.E.2 were used at the beginning of the first world war for reconnaissance work, since it was the only thing that could be used to gather information beyond the trenches of the enemy army, in order to know their strategies and movements.