Which innovative sustainability practice was first widely adopted by Broadway theaters in 2018, reducing their environmental impact by an estimated 20%?

The performing arts industry has been making significant strides in sustainability efforts over recent years. From eco-friendly set designs to carbon-neutral productions, theaters and performance venues are reimagining how they operate in an environmentally conscious world. Test your knowledge about the intersection of sustainability and the performing arts industry with this challenging trivia question!

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Implementation of LED lighting systems replacing traditional stage lights
Digital-only playbills and promotional materials
Biodegradable costume materials made from algae-based fabrics
Solar-powered sound systems and backstage operations