A manager realized that in spite of the best efforts put in by his workers, the target could not be achieved. 'Obsolete machinery' was the cause of deviation.

Suggest from the following, a corrective action that could be appropriate to overcome the ongoing problem.

Undertake technological upgradation of machine

The correct answer is option 3- Undertake technological upgradation of machine.

The most appropriate corrective action to overcome the ongoing problem of "obsolete machinery" would be Undertake technological upgradation of machine.

If the machinery is obsolete, it means that it is outdated and likely inefficient, which is causing a deviation from the desired target. Repairing the existing machine might provide a temporary fix, but it won't address the root cause of technological obsolescence. Improving physical conditions of work or modifying existing processes may also help in some contexts, but upgrading the technology of the machinery is the most direct and effective way to solve the problem. This would ensure the machinery is modern, efficient, and capable of meeting production goals.