Explanation:

All codes are correct.

‘Tour of Duty’ model of recruitment would let young individuals voluntarily serve for a temporary period of three years. Recently, the Department of Military Affairs has finalised a radical proposal for future recruitment to the armed forces. The Army will be the first to try out the concept –the ‘Tour of Duty’ model. The benefits of this model are,

• The cost of a three-year service per officer will be a fraction of the cost incurred on Short Service Commission (SSC) officers. Hence, there are immense financial benefits to the organisation due to a reduction in pay and gratuity payouts.
• For citizens, It will help to “channelise the youth energy into positive utilisation of their potential”
• Advocates of this scheme also cite “resurgence of nationalism and patriotism”, and reduction in unemployment rate in our country.
• The entire nation will benefit from “trained, disciplined, confident, diligent and committed” young men or women who have done the three-year service.

Hence option 4th is correct.