The given sentence has four underlined phrases. Choose the one that is INCORRECT and the option that gives the grammatically correct phrase.
Mumbai has a far larger population than Naples, but both cities are places of striking contrasts, of prosperous neighbourhoods narrowly separated entangled by crowded slums and narrow streets.

Option A: Correct.

We have to first skim through the paragraph and try to spot a phrase that may be grammatically or contextually unfit with its preceding or succeeding phrases/ words.

separated entangled by crowded slums, separated and entangled used without punctuation, simply put together, makes no sense. Hence this is the wrong phrase, which can be corrected by option A- separated by a tangle of.