Variance, if used to alert managers before time of problem is called

The correct answer is D. early warning.

Variance is a measure of the difference between actual and expected results. It can be used to identify potential problems before they occur, allowing managers to take corrective action. This is known as early warning.

A varied warning is not a valid term.

A times warning is not a valid term.

A managers warning is not a valid term. It is possible that a manager may be responsible for issuing an early warning, but the early warning itself is not a warning from a manager.