The statement that gives the most accurate comparison between the Eastern and Western Fronts of World War I is:
"The Western Front was stagnant, but had many offensives. The Eastern Front had fewer offensives, but the front shifted considerably during each one."
This comparison highlights the key characteristics of both fronts: the Western Front saw lengthy periods of trench warfare with many offensives that did not lead to significant territorial gains, while the Eastern Front experienced more fluid movement and larger territorial changes, albeit with fewer concentrated offensives.