Final answer:
The alliterative term for the rigorous and monotonous routine of daily working life is 'Grindstone'.
Step-by-step explanation:
The alliterative term for the rigorous and monotonous routine of daily working life is C) Grindstone. This term refers to the idea of continuously working hard and focusing on repetitive tasks, similar to grinding against a stone. It implies that the work is challenging and demanding, but lacks excitement or variety.