To answer this question, the user needs to have some knowledge about the top libraries in the world.
Option A: New York Public Library is a well-known library in New York City, but it is not the largest library in the world.
Option B: Bibliotheque nationale de France's is a national library of France. It is one of the largest libraries in the world, but it is not the largest.
Option C: British Library is the largest library in the UK and one of the largest in the world. However, it is not the largest library in the world.
Option D: United States Library of Congress, Washington DC is the largest library in the world. The Library of Congress is the research library that serves the United States Congress and is the de facto national library of the United States. It has more than 170 million items, including books, manuscripts, recordings, photographs, maps, and prints.
Therefore, the correct answer is:
The Answer is: D. United States Library of Congress, Washington DC.