(i) "National Education Policy 2020 of India stresses a lot on in-service teachers' training." In the light of the given statement, state and explain any two advantages of such on-the-job trainings in upliftment of education sector of any nation. (ii) Define Casual Wage Labourer. (i) Elaborate any two reasons owing to which lesser number of women are found in regular salaried employment. (ii) Define worker – population ratio.