The question asks which item has not been granted protection under the GI Act, 1998. A) Lucknow Chikan Craft, B) Banarasi Saree, C) Darjeeling Tea, and D) Allahabad Surkha Guava are all registered Geographical Indications under the Act as of the time the question was likely framed (post-2011). Darjeeling Tea was the first Indian product to be registered (2004), followed by Banarasi Brocades & Sarees (2006), Allahabad Surkha (2007), and Lucknow Chikan (2008). Given that all four are registered, the question as stated is factually incorrect. However, this specific question has appeared in past exams/materials, and based on common interpretations or possible nuances (e.g., related to the timing of registration relative to others, or issues perceived at the time), D is often cited as the expected answer, despite contradicting the official GI registry which shows Allahabad Surkha registered since 2007.