Final answer:
The extra hardship encountered in the quarry during Nathan's illness is heavy rain, which makes working conditions more dangerous and hampers the effectiveness of labor and equipment.
Step-by-step explanation:
The extra hardship that makes working in the quarry difficult during Nathan's illness is heavy rain. This adverse weather condition can make the terrain slippery and dangerous, complicating the efforts of quarry workers who are already dealing with the physically demanding nature of their labour.
The rain can also affect the structural integrity of the quarry walls and cause equipment to malfunction or become less efficient, thereby increasing the difficulty of an already challenging job.
The extra hardship that makes working in the quarry difficult during Nathan's illness is d) Quarry management.
During Nathan's illness, the quarry management may not have been sympathetic or accommodating to his condition, which would have made it difficult for him to continue working. This lack of understanding and support from management would have added to the challenges Nathan faced while working in the quarry.