I believe the answer is: Daily
During the previous excavation, the safety measurement that the team made prior to the excavation may be compromised due to the movement and the vibration force made during the excavation .
Because of this, a competent person must be appointed to inspect it daily in order to prevent future accidents.
Its a between C and D it was to be one of those two
I believe it is C. tropical rains because of the location of bay of Bengal