The correct answer is: Only I, II and III are strong.
Argument I is strong because it is based on the premise that the government needs to augment its resources for implementing development programs. This is a valid concern, as the government has a responsibility to provide essential services to its citizens. Selling profit-making public sector units to private companies could generate revenue that could be used to fund these programs.
Argument II is weak because it is based on the premise that private companies will not be able to run these units effectively. This is a sweeping generalization that is not supported by evidence. In fact, there are many examples of private companies that have successfully run public sector units.
Argument III is strong because it is based on the premise that there will be a significant improvement in the quality of services if these units are sold to private companies. This is a valid concern, as public sector units are often inefficient and provide poor service. Selling them to private companies could lead to improved efficiency and service quality.
Argument IV is weak because it is based on the premise that there would not be job security for the employees at all the levels. This is a possibility, but it is not a certainty. In fact, there are many examples of private companies that have retained employees after acquiring public sector units.
In conclusion, only arguments I, II and III are strong.