In the section "Planted Quite Closely," how does the author develop the idea that Washington's cherry trees have been expertly cared for? By stating that the trees reach around both waterfronts and into the streets, the author highlights that the cherry trees are thriving. By stating that the Tamagukura is the first to bloom, the tallest, and the longest-lived, the author highlights the gardeners' knowledge of the various types of cherry trees. By stating that many of the trees will be replaced next spring, the author highlights the gardeners' desire to discard the original cherry trees from Japan. By stating that the trees are planted as closely as currant bushes, the author highlights how many trees the city is able to accommodate.