English Language · English

In the following sentence, words given in bold are marked as (A), (B), (C), and (D). Choose the pair of words that need to be interchanged to make the sentence grammatically correct and meaningful. If no interchange is required, select the option indicating no change. 'A democracy (A) cannot function effectively when citizens (B) lack awareness of their constitutional (C) rights and responsibilities, making education (D) an indispensable democratic tool.'