In the section "First Tree Planted by Mrs. Taft," how does the author develop the idea that Washington, D. C., is an extraordinary city? By stating that Washington's trees came from Japan, the author highlights the importance of the capital city to the nation and the world.

By stating that the history of Washington's cherry trees is linked to that of the First Lady, the author highlights that Washington is where the president lives.

By stating that Washington is unique, the author highlights that the story he is about to tell could only have happened in that city.

By stating that it is the only city in the nation where cherry blossoms bloom profusely, the author highlights a positive difference between Washington and other cities.