D. Mention the roles of national organizations and institutions to control
social problems.

They work to guarantying welfare in a diverse section of society. They work for the welfare of denied areas of the general public like reaching to the slums.

They are credited for generating awareness in the society relating to health diseases or any upcoming government policies on their benefits or harmfulness.

They are best recognised for volunteering amongst the poor or the most unreached section of the society to enhance their livelihood. They are playing an effective role in highlighting root level social problems on a broader view.

no , per capita income is not a true measure of the development because: -it only tells us about average income not how income is distributed among the people.it only give us an idea of the economic aspect.it is only at the qualitative basis.moreover, income is not only the way of development other factors are also as much as important as income.