Concept:Understanding degrees of comparison in English grammar.Explanation:The sentence "No other democracy in the world is ______" uses the structure "No other... is... than..." which is characteristic of the comparative degree.In comparative degree, we compare two things. The phrase "No other" is used to state that one item is greater or more than all others in a group.Let's look at the options:A. larger than India. This fits the comparative structure where India is being compared to all other democracies.B. the largest in India. This suggests a superlative degree ("the largest"), which is incorrect here.C. not so large as India. This structure ("not so... as") is used for positive degree, not comparative.D. as large as India. This structure ("as... as") is also used for positive degree.Therefore, to complete the sentence correctly in the comparative sense, we need a phrase that indicates India is larger than any other democracy.Answer:larger than India.