Final answer:
DigSafe or similar services require a minimum of 48 hours' notice for locating and marking underground utilities, not including weekends and holidays, to ensure safe digging practices.
Step-by-step explanation:
The correct answer to the question is B) 48 hours. When planning to do any digging, it is essential to call DigSafe or a similar utility notification service at least 48 hours in advance. This does not include weekends and holidays, which means if you plan to start a project on a Monday, you would need to call by the previous Thursday to account for a Saturday and Sunday.
This lead time allows for the proper authorities to mark the location of underground utilities so that you do not accidentally damage them during excavation. Damaging utilities can be dangerous and costly, so it is crucial to allow sufficient time for them to be properly marked.