Answer:
Option: High casualty rates and a stalemate on the Western front.
Explanation:
The wartime condition and the effects were worse with more deaths because of the use of new weapons. The war fought in trenches on the front line where these trenches were long with narrow channels dug into the ground. The condition was very muddy, slimy, and uncomfortable. There was a continuous threat of shellfire. New weapons like poison gas, grenades, machine guns, and artillery killed many from afar. Submarines, warplanes and tanks also used in a war which led to more casualties and destruction.
