13. Seoul is quickly gaining greater visibility as a global green pioneer and a civic designinnovator. In July, it was named a UNESCO (United Nations Educational, Scientific, andCultural Organization) City of Design in appreciation of its use of diverse design policies,its rich cultural heritage, and its creative potential to make the city more livable andsustainable. And in September, the international IDEA (International Design ExcellenceAwards) Brazil 2010 Awards, one of the planet’s most prestigious design prizes, chose theSeoul Metropolitan Government as its gold medal winner for its innovative use of ecofriendlydesign strategies. _______________
(A) These are two indications that when it comes to its model urban development programsand building a truly sustainable city, Seoul is doing things right.
(B) In Seoul, the haze that used to darken the sky is gradually disappearing, with more daysof clear skies and high visibility.
(C) Another eco-friendly auto that begins to make an appearance on Seoul’s roads is theneighborhood electric vehicle.
(D) Seoul is one of the world’s megacities and its challenge is to accommodate the growthof the population while reducing the impact.