Which architectural firm first achieved the 'Living Building Challenge' certification, architecture's most rigorous sustainability standard requiring net-positive energy and water usage?

In the rapidly evolving world of architecture, sustainability has become more than just a buzzword—it's an imperative design principle. Many pioneering architectural firms have developed innovative approaches to reduce environmental impact while creating stunning, functional spaces. This poll tests your knowledge about a groundbreaking sustainability initiative that changed how architects approach carbon-neutral design in commercial buildings.

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The Miller Hull Partnership (for the Bullitt Center in Seattle)
Foster + Partners (for the Apple Park in Cupertino)
Gensler (for the Shanghai Tower in China)
BIG - Bjarke Ingels Group (for the CopenHill waste-to-energy plant)