Directions: Which of the phrases, 1, 2, 3, and 4 given below should replace the phrase given in bold in the following sentence, to make this sentence grammatically meaningful and correct? If the sentence is correct as it is and no correction is required, mark 5 as the answer. Mumbai is a city of contradictions; the rich live side-by-side with the poor and slums dot entrance to some of world's most expensive real state.