1 . The electronic conveyor-belt system, which Susan Park (A) adapted from a production-line method (B) pioneered by Thomas Langley, reduced the (C) required time being needed of assembling a SmartGadget device (D) from over ten hours to just 120 minutes.

• A. A
• B. B
• C. C
• D. D
• D. E

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Answer: Option D

Explanation: