What was Amazon's primary stated purpose for creating The Spheres in their Seattle headquarters?

Amazon's Seattle headquarters features a unique architectural marvel called 'The Spheres' - three connected glass domes housing over 40,000 plants from 30+ countries. This innovative workspace represents a fascinating intersection of geography, architecture, and retail corporate culture. But beyond being visually striking, The Spheres serve a strategic purpose in Amazon's approach to employee experience and innovation. How well do you know about this landmark retail innovation that's reshaping corporate geography?

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To create a 'biophilic' workspace that improves employee creativity and wellbeing through connection with nature
To operate as a public greenhouse and botanical garden that would attract tourists to Seattle's downtown area
To serve as a testing facility for Amazon's agricultural technology and plant delivery services
To function as a carbon offset project that would neutralize emissions from Amazon's delivery operations