In which year was the zipper invented?

This question requires knowledge of historical facts, specifically the invention dates of common items.

• Correct Answer: 1893. The zipper, initially known as the "Clasp Locker," was invented by Whitcomb L. Judson. He received a patent for his invention in 1893, which was primarily designed to fasten shoes. While the design underwent significant improvements and popularization in later years, 1893 marks the year of its foundational invention.
• Distractors: Options A (1851), C (1905), and D (1923) are incorrect dates for the initial invention of the zipper.