Answer:
The statement that best describes the effect of new technology during World War 1 is: "New technology led to unprecedented levels of destruction and casualties, and transformed the nature of warfare."
World War I was characterized by the use of new technologies that had never been seen on the battlefield before, such as machine guns, poison gas, tanks, and airplanes. These technologies led to unprecedented levels of destruction and casualties, and transformed the nature of warfare.
Machine guns, for example, made it possible for a small number of soldiers to hold off much larger forces, leading to stalemates and trench warfare. Poison gas caused horrific injuries and deaths, and led to the development of gas masks and other protective equipment. Tanks allowed for armored assaults on enemy positions, while airplanes made it possible to gather intelligence and to engage in aerial combat.
These new technologies had a profound impact on the military strategies and tactics of the warring nations, and led to a war of attrition in which neither side was able to gain a decisive advantage. The scale of the devastation caused by these technologies also led to a sense of disillusionment and despair, and helped to pave the way for the social and political changes that would come after the war.
Overall, the new technologies of World War I had a profound and lasting impact on the course of the conflict and on the world as a whole, and helped to shape the future of warfare in the decades to come.