Which innovative retail strategy first made the Oxford English Dictionary accessible to the general public in 1928, dramatically changing dictionary sales models?

In the world of language resources, dictionary publishers have employed fascinating retail strategies throughout history. The marketing and distribution of dictionaries has evolved dramatically from subscription-based publishing to modern digital strategies. This poll tests your knowledge of a pivotal moment in dictionary retail history that revolutionized how language reference materials were sold to the public and helped democratize access to comprehensive language resources.

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The 'Compact Edition' with magnifying glass, allowing the complete dictionary to be sold at one-quarter the original price
The introduction of subscription-based quarterly fascicles that could be collected and bound into a complete dictionary
The 'Oxford Simplified' abridged version that contained only the 25,000 most commonly used English words
The revolutionary 'payment plan' system allowing customers to purchase volumes individually over time