Controlling — Business Studies STD 12 Commerce — Question

Name the concept, which suggests that only significant deviations which go beyond the permissible limit should be bought to the notice of management.
OR
Which principle of management control suggests that the routine problems should be left to the subordinates?

OR
Which principle of management control suggests that an attempt to control everything results in controlling nothing?

OR
The operations manager set a limit of 5% deviation in production and decided to take corrective action only if deviations occurred beyond 5%. Name the controlling principle applicable here.