The correct answer is: Only I follows.
The statement says that most of the development plans develop in papers only. This means that the plans are not implemented on the ground. The courses of action are:
I. The in-charges should be instructed to supervise the field-work regularly.
II. The supply of paper to such departments should be cut short.
Course of action I is a good way to ensure that the plans are implemented on the ground. If the in-charges are instructed to supervise the field-work regularly, they will be able to identify any problems and take corrective action.
Course of action II is not a good way to ensure that the plans are implemented on the ground. Cutting the supply of paper will not stop the plans from being developed on paper. It will only make it more difficult for the in-charges to do their job.
Therefore, only course of action I follows.