Final answer:
While German trenches were initially more elaborate, both German and Canadian soldiers faced the severe conditions of trench warfare. Therefore, it is difficult to determine which group 'lived better' without specific comparative evidence about all aspects of trench life.
Step-by-step explanation:
When discussing the conditions experienced by Canadian and German soldiers in World War I trenches, it can be said that living conditions were harsh for all soldiers, but there were variations in the experiences between different armies. Initially, German trenches tended to be deeper and more elaborate, suggesting a plan for a longer-term occupation, while Allied trenches, including those of Canadians, were more rudimentary and later developed over time. Although both sides faced the horrors of trench warfare and losses, without specific comparative evidence on living conditions, it's difficult to determine conclusively who 'lived better.' The subjective nature of 'living better' and the lack of direct comparisons for all aspects of trench life (shellings, rations, living quarters, diseases, and weather conditions) indicate that the answer to the question is d) It cannot be determined.