Which of these sustainability initiatives was actually implemented by a major dictionary publisher in the last decade?

The publishing industry has been evolving to meet environmental challenges, with dictionary and language reference publishers leading innovative sustainability initiatives. This poll tests your knowledge about how major dictionary publishers have transformed their practices to reduce environmental impact while continuing to document our ever-evolving languages. Can you identify which sustainability initiative has genuinely revolutionized this specialized publishing sector?

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

Oxford University Press using mushroom-based mycelium packaging for all physical dictionaries, eliminating plastic packaging entirely
Merriam-Webster creating a carbon-neutral digital dictionary platform powered exclusively by renewable energy data centers
Collins Dictionary switching to edible rice paper for their pocket dictionaries' pages in Asian markets
Cambridge Dictionary implementing blockchain to verify sustainable sourcing for all paper used in their printed editions