Who among the following said that Democracy means a system of 'Government by Consent' ?

Who among the following American Presidents described democracy as “Government of the People, for the People and by the People”?

Who among the following is the author of the book, The Social Contract?

Who among the following believed that “a communist society was the natural society of the future”?

Which one of the following statements with regard to protective democracy is not correct?

Consider the following features : 1. Consent of the governed 2. Political equality 3. Accountability of the ruled to the ruler Which of the above feature/features outline democratic rule?