Correct Answer: (d) Structural
Solution:The nature of frequent unemployment in developing countries like India and underdeveloped countries, is structural. Structural unemployment arises due to mismatch between the skills of labour force and the jobs available in the market. The main cause behind it, is poor education and training. It reflects the backwardness of economic infrastructure, limited availability of capital and oversupply of labour force. Many people in India do not get job matching to their skills or due to lack of requisite skills they do not get job and because of poor education level, it becomes difficult to train them.