Calendars and schedules, along with routines, are effective tools that help us manage our time by assigning specific time slots for various activities. Lists can assist in organizing tasks but do not provide time increments on their own. Piles of clutter do not aid in time management at all. ;
The best tools for managing time in our days are calendars and schedules, along with routines. Lists aid in organization but do not provide specific time allocations, while clutter disrupts time management. Therefore, the correct answer is C. Calendars and schedules.
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